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USED B550 AM4 mATX PRICE

What a used B550 AM4 mATX is worth today, tracked from verified eBay sold listings so the numbers reflect what people actually paid — not what sellers are asking.

Current used value $72.33 as of August 22, 2026
30-day average $62.47 5 readings
90-day average $62.65 13 readings
30-day change +20.6% from $60.00
Recorded range $50.00 – $138 30 price points

A used B550 AM4 mATX is currently worth about $72.33, based on verified eBay sold listings through August 22, 2026. The 30-day average is $62.47 and the 90-day average is $62.65. That is up 20.6% over the last 30 days, from $60.00. We have tracked 30 price points for this part since January 2026, with a recorded range of $50.00 – $138.

If you are buying a used B550 AM4 mATX

Anything up to about $66.00 is a normal market price from a seller who tested the part and will take it back. Around $56.00 is a good buy. Below that, work out why: untested, no returns, cosmetic damage, or missing accessories are all legitimate reasons for a discount — and all reasons the price should be lower. A price far under the range above, from a seller who won’t answer questions, is the oldest bait there is.

If you are selling one

Listing privately around $56.00 is realistic if you are willing to photograph it, answer questions, ship it, and absorb the occasional return. Selling it outright — to a shop, or as part of a whole machine — lands nearer $44.00, because the buyer is taking on the testing, the warranty and the time. Neither number is wrong; they price different amounts of work.

Recorded price history

Every dated observation we hold for the B550 AM4 mATX, newest first — each one the average of completed eBay sold listings for that week. All 30 readings since January 2026.

Used B550 AM4 mATX average sold price by date
DateAverage sold priceChange
$72.33 +20.6%
$60.00 no change
$60.00 no change
$60.00 no change
$60.00 no change
$60.00 no change
$60.00 no change
$60.00 −13.3%
$69.20 +15.3%
$60.00 no change
$60.00 −9.7%
$66.41 −0.1%
$66.45 +3.0%
$64.54 −5.8%
$68.55 +8.3%
$63.27 +5.5%
$60.00 no change
$60.00 +20.0%
$50.00 −16.7%
$60.00 no change
$60.00 no change
$60.00 no change
$60.00 −24.0%
$78.99 no change
$78.99 −42.8%
$138 +6.2%
$130 no change
$130 −4.8%
$137 +70.7%
$80.00 —

Everything above is computed from 30 dated observations of completed eBay sold listings for the B550 AM4 mATX, the most recent from August 22, 2026. These are market values for a working, complete unit — not our asking price, and not an offer. How we calculate these prices →

We currently have 1 tested unit of this part in stock at $20.00. Browse our motherboards in stock →

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