Price History for 12-Volt or 24-Volt Diagnostic Relay
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12-Volt or 24-Volt Diagnostic Relay
This Relay Buddy is a quick go/no-go tester for the most common automotive relays. This new version Relay Buddy tests both 12-Volt and 24-Volt relays. If the relay fails the test, 3 different trouble codes will
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Price History Chart
Recorded price history
Showing the 30 most recent of 36 recorded prices.
| Date | Price |
|---|---|
| Oct 30, 2026 | $73.61 |
| Oct 18, 2026 | $73.71 |
| Aug 30, 2026 | $75.13 |
| Jul 16, 2026 | $75.42 |
| Jul 15, 2026 | $76.12 |
| Jun 26, 2026 | $75.42 |
| Jun 14, 2026 | $77.71 |
| Jun 11, 2026 | $77.78 |
| May 19, 2026 | $75.39 |
| May 15, 2026 | $75.49 |
| May 13, 2026 | $71.87 |
| May 11, 2026 | $74.09 |
| Apr 27, 2026 | $76.38 |
| Apr 26, 2026 | $78.65 |
| Apr 19, 2026 | $75.13 |
| Apr 13, 2026 | $73.93 |
| Apr 12, 2026 | $75.60 |
| Apr 10, 2026 | $73.93 |
| Mar 22, 2026 | $75.52 |
| Mar 19, 2026 | $76.23 |
| Mar 1, 2026 | $75.68 |
| Jan 13, 2026 | $76.53 |
| Jan 11, 2026 | $71.94 |
| Jan 10, 2026 | $74.16 |
| Jan 9, 2026 | $76.45 |
| Jan 8, 2026 | $76.46 |
| Jan 6, 2026 | $74.38 |
| Jan 4, 2026 | $76.46 |
| Jan 2, 2026 | $74.38 |
| Jan 1, 2026 | $81.15 |
36 recorded prices; last found in Home Depot’s data on Nov 2, 2026. How we track prices
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Analysis
12-Volt or 24-Volt Diagnostic Relay price analysis
Price analysis for 12-Volt or 24-Volt Diagnostic Relay at Home Depot: today's price of $73.61 is near the low end of the range we've recorded ($71.87 to $85.16).
- The current price of $73.61 is 1% (or $0.77) below the MSRP of $74.38.
- Today's price is 2% below its average daily price over the last 90 days ($74.95).
- The lowest recorded price on PriceWatchPro was $71.87 on May 13, 2026. That's $1.74 below today's price.
- The highest recorded price on PriceWatchPro was $85.16 on December 29, 2025. Today's price is $11.55 below that peak.
- 30-day trend: essentially flat (less than 1% movement).
- Across 35 tracked price changes, the listing has dropped 15 times with an average drop of $2.23.
- PriceWatchPro has been tracking this listing since October 21, 2025 (377 days of price history).
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Compare 12-Volt or 24-Volt Diagnostic Relay prices across retailers
Same item (UPC 855174001229), also tracked at:
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