Price intelligence for smart shoppers. Track history, spot trends, and never overpay.
TimeYourBuy tracks Amazon price history so you always know whether today's price is a deal or a ripoff. We analyze months of pricing data to tell you exactly when to buy — and when to wait.
We don't sell products. We don't push you to buy. We just give you the data to make smarter decisions.
Our scoring engine compares the current price against a rolling 12-month price history. The score (0–100) reflects how far the current price sits below its historical average, adjusted for category, volatility, and — for commodity categories like Memory and Storage — live market conditions.
TimeYourBuy participates in the Amazon Associates Program. We earn a small commission when you buy through our links — at no extra cost to you. This is how we keep the site free.
Privacy Policy · Terms of Service
Last updated: May 9, 2026
TimeYourBuy doesn't sell your data, doesn't track you across the web, and doesn't set tracking cookies. We store your email only if you ask us to send you a price alert — and we delete it the moment you unsubscribe.
Here's exactly what that means.
Email address — only if you sign up for a price alert. We use it once: to send the alert you asked for. We never sell it, share it, or send you anything else.
Anonymous usage analytics — we use Umami, a privacy-respecting analytics tool hosted on Umami Cloud. It records page views, referrer, browser type, and operating system in aggregate. No cookies. No fingerprinting. No cross-site tracking. No personal identifiers. Data is kept for 12 months, then deleted.
Search queries — the searches you run on the site are logged so we can improve product matching. They are not linked to your email or any personal identity.
When you register an alert, we store two things: your email and your target price. When the price hits your target, we send one email. That's it.
Every alert email includes an unsubscribe link that immediately deactivates your alert. We also send a List-Unsubscribe header so Gmail and other email clients can offer a one-click unsubscribe button. If you don't unsubscribe and your alert sits unused for 12 months, we delete it.
TimeYourBuy participates in the Amazon Associates Program. When you click through to a product, Amazon may set its own cookies under their privacy policy — we have no control over that. We earn a small commission on qualifying purchases at no extra cost to you. This is what keeps the site free.
We don't set any first-party tracking cookies. Umami, our analytics tool, is cookie-free by design.
Depending on where you live, you may have the right to:
Email timeyourbuy@gmail.com to exercise any of these rights. We respond within 30 days.
Questions, concerns, or you spotted something we should fix? Email timeyourbuy@gmail.com.
Last updated: April 8, 2026
By using TimeYourBuy, you agree to these terms. If you don't agree, please stop using the site.
TimeYourBuy is a price intelligence tool. We track publicly-available Amazon pricing data and provide buy/wait signals based on historical price analysis. We are not a retailer, marketplace, or financial advisor.
Prices and availability change constantly. Our signals represent our best analysis of historical data — they are not guarantees of future pricing. Always verify the current price on Amazon before purchasing.
We do our best to keep price data accurate and up to date. However, prices are sourced from third-party data providers and may not reflect real-time availability or seller-specific pricing.
TimeYourBuy participates in the Amazon Associates Program. We earn a commission on qualifying purchases made through our links. This does not affect the integrity of our buy signals — we score products objectively based on price history.
You may use TimeYourBuy for personal, non-commercial use. You may not scrape, copy, or redistribute our price data or signals in bulk without written permission.
TimeYourBuy is provided "as is". We are not liable for any purchasing decisions made based on our signals. Always do your own research before making a purchase.
We may update these terms from time to time. Continued use of the site constitutes acceptance of any changes.
Questions? Email us at timeyourbuy@gmail.com.
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Here's exactly how we calculate buy and wait signals, and how well they actually performed when we tested them.
Every product gets a score from 0 to 100. The score combines four things:
| What we look at | Weight | What it tells us |
|---|---|---|
| Price vs. its 12-month range | 35% | Is today's price near the low or near the high? Lower = better deal |
| Time of year | 25% | Does this category usually drop in price this month? |
| Recent direction | 20% | Has the price been moving up or down over the last 30 days? |
| How fresh the deal is | 20% | Did the price just drop, or has it been at this level for a while? |
The score becomes a signal: STRONG BUY (80–100) · BUY (60–79) · FAIR (40–59) · WAIT (20–39) · STRONG WAIT (0–19). When we have less price history for a product, we show a lower confidence number so you know the signal is less certain.
To check our signals, we set aside 20% of our data and ran the algorithm on it as if we were seeing it for the first time. A buy signal is "right" when the price doesn't drop sharply afterwards — meaning you didn't miss a better deal. A wait signal is "right" when the price does drop — meaning waiting saved you money. We measure each two ways: looking at the price exactly 30 days later, and looking at the lowest price seen during those 30 days.
A buy signal is "right" if you didn't miss a better deal — i.e., the price didn't drop more than 5%.
| Signal | Price didn't drop by day 30 | Price never dropped in 30 days | Avg price change | How many cases |
|---|---|---|---|---|
| STRONG BUY | 88.4% | 73.6% | +18.7% | 12,477 |
| BUY | 80.9% | 58.5% | +6.4% | 29,629 |
"Held throughout" is the stricter test — it catches cases where a cheaper price appeared briefly even if the price recovered by day 30. For comparison: always buying immediately would pass the strict test 50% of the time.
A wait signal is "right" if a cheaper deal appeared — i.e., the price dropped at least 5% (it doesn't measure whether prices rose).
| Signal | Price dropped by day 30 | Price dropped at some point in 30 days | Avg price change | How many cases |
|---|---|---|---|---|
| WAIT | 35.7% | 64.2% | −4.7% | 39,935 |
| STRONG WAIT | 57.9% | 84.4% | −14.5% | 896 |
"Dropped at some point" is more lenient because a price can briefly dip and then recover. For comparison: always waiting would catch a drop at some point 50% of the time, and random guessing ≈ 40%. FAIR signals (29,026 cases) had an average price change of +0.9% — neither a clear buy nor a clear wait.
When we say a signal is "75% confident," is it actually right 75% of the time? Below, we plotted what we predicted against what actually happened. Dots close to the dashed line mean our predictions matched reality. Dots far from the line mean we were over- or under-confident.
On average, our STRONG BUY confidence was off by 2.6 percentage points across 12,477 cases. BUY was off by 1.2 across 29,629 cases. Both are well within the range we'd consider reliable (under 5 points). Based on our test set, looking 30 days ahead.
Our catalog is products that are still on Amazon today. Products that disappeared — often after a fire-sale discount — aren't in our data, which could make our results look better than they really are. To check, we compared two groups in our test set: products that are still being sold, and products that got pulled off Amazon afterwards.
| Signal | Still selling | Later removed | Difference |
|---|---|---|---|
| STRONG BUY | 73.7% | 72.5% | −0.1 pts |
| BUY | 58.6% | 57.1% | −0.1 pts |
| WAIT | 64.4% | 62.5% | −0.1 pts |
The gap is tiny — under 0.2 percentage points for every signal. STRONG WAIT showed a slightly bigger gap (+0.3 points), but only 18 discontinued products fell into that bucket, so the difference isn't meaningful.
Email timeyourbuy@gmail.com. If something here is unclear or you spot a problem, please let us know.
![DualShock 4 Wireless Controller for PlayStation 4 - Wave Blue [Old Model] (Renewed)](https://images-na.ssl-images-amazon.com/images/I/41TpdQwXogL.jpg)
PlayStation
$69.25
Signal: FAIR
The DualShock 4 Wireless Controller for PlayStation 4 - Wave Blue [Old Model] (Renewed) is currently $69.25. We don't have enough price history yet to call a buy or wait signal — check back in a few weeks.
Track the price history and get buy/wait signals for DualShock 4 Wireless Controller for PlayStation 4 - Wave Blue [Old Model] (Renewed) on TimeYourBuy.