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msi

MSI PRO B550M-P Motherboard, mATX

Supports AMD Ryzen 5000/5000 G-Series, 4000 G-Series, 3000/3000 G-Series Desktop Processors, AM4 - DDR4 Memory Boost (up to 4400+ MT/s OC), PCIe 4.0 x16, M.2 Gen4

$89.99

at Amazon

Above the middle of our record.

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Watch this price

$89.99 is above the middle of our record.

The middle price across the 20 days we have watched it, counting the days a limited-time deal was running, was $74.99. That is $15.00 less than today. It reached $66.48 at least once in that time, and the high was $89.99.

Today's price is $15.00 above its usual $74.99.

When the price here has fallen to $69.99 or below — 3 times in our record — it stayed there a median of 24 hours, and at most 48 hours.

The lowest, $66.48 on October 6, was a deal only Prime members could buy at. The lowest anyone could pay was $69.99.

This describes the prices we recorded. It is not a forecast of where this one goes next.

Price at AmazonVerified

Price history

One line: the best price any tracked retailer charged, per day.

Prime Big Deal Days 2026median $74.99low $66.48SepOctnow $89.99

Price set by a third-party seller, not the retailer itselfDeal for Prime members only

Flat over 17 days20 days on record · 7 price changes

Shaded stretches are sales, from our calendar.

Use this chart elsewhere:The chart redraws itself as we record new prices.
Prices we recorded ourselves. Usual is the price on the typical day, with limited-time deals left out unless they ran on most of the days we recorded; Average is the mean of every recorded day, deals included, so a gap between the two columns is a record holding an outlier.
PriceNowLowestHighestUsualAverageDays recorded
New$89.99$66.48 on Oct 6$89.99 on Oct 8$74.99$76.1420
Sold by Amazon—$66.48 on Oct 6$89.99 on Oct 8—$76.3920
Third-party sellers—$69.99 on Sep 24$69.99 on Sep 24—$69.9917

Sales events

Next on the calendar: Black Friday, November 27. We keep checking this price through it and report here what it did.

What our record shows

  • $20.00 more than the $69.99 it cost on October 8 — this price went up, not down.

Computed from our own checks at Amazon as of October 10. No line here uses a price a retailer told us about.

Where to buy

Held for
2d
Their 20-day low
$66.48
Checked
3h ago

Prices checked at least every 12 hours. “Held for” is how long that retailer has been charging this price. A hidden price is one we cannot re-confirm recently enough to publish.

We earn a commission on purchases. It never affects our rankings.

Tell me when it drops

A notification in this browser when the price falls. No email, no account, nothing to install.

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What it is

3 attributes, in the retailer’s own words. We record the prices; these we only pass on.

Model
PRO B550M-P
Released
June 2026
Warranty
3 Years

Cheaper in PC components, and what changes

Things we track on the same shelf for at least 10% less than $89.99, with the attributes the retailers describe differently. Their words, not our judgement — we record prices, we do not test products.

Every change we recorded at Amazon

Every row is a price we saw change. We write one only when a price actually moves, so a gap here means the price held.

WhenPriceChange
2d ago$89.99+$20.00
2d ago$69.99+$3.51
4d ago$66.48−$8.51
14d ago$74.99+$5.00
15d ago$69.99−$5.00
16d ago$74.99+$5.00
16d ago$69.99−$5.00
19d ago$74.99first seen
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$89.99

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