Used Tool Index
DealsTool TypesPlatformsValue retentionMethodology
18V ONE+ · Angle Grinder · bare tool or kit

Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) used price

Prices as of · from live eBay listings, updated daily

Typical asking price · updated daily

$66.43

typical
Below ≤ $59.99$66.43Above > $74.29

A used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) typically asks $66.43 — the median across 12 listings live on eBay as of — with most between $59.99 and $74.29. It is the 1st cheapest of 7 angle grinders tracked here. Listings under this part number cover both the bare tool and the kit. The median has held within 5% since Oct 17, 2026.

Selling one? Price at or below $59.99 to undercut three quarters of the 12 listings competing with you, or up to $74.29 to sell at the top of the normal range.

The full spread runs $49.99 to $140.70. These are asking prices, not sales, so treat them as where sellers start rather than what the tool fetches.

12 live listingsSee them all

Refreshed daily from live eBay listings. How we calculate this

Live listings · updated today

Best price right now

See all listings ↓

RYOBI P4221 18 VOLT CORDLESS GRINDER (TOOL ONLY)

$49.99delivered25% below typical

View on eBay

Where the 12 live listings sit

middle halfmedianone listing

$49.99$55.99$59.99$59.99$66$66.09$66.76$69.88$71$84.14$117 — beyond the plotted range$140.70 — beyond the plotted range
$49.99 delivered — view this listing on eBay3 listings from $55.99 to $59.99 — jump to the listings4 listings from $66 to $69.88 — jump to the listings$71 delivered — view this listing on eBay$84.14 delivered — view this listing on eBay2 listings from $117 to $140.70 — jump to the listings
$48median $66.43$98+

2 listings above $98 — up to $140.70 — are plotted at the right edge rather than stretching the axis.

Price history

Median asking price for a used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221), one day a week, from every verified listing live on eBay that day. It has held within 5% since Oct 17, 2026.

DateMedian askingListings
$66.7613
$66.4314
$66.4312
$68.3212
$69.8811
$68.3210
$66.4312
$66.1013
$66.7611

Live listings (12)

As an eBay Partner Network affiliate, we earn from qualifying purchases made through links on this page, at no extra cost to you. That never affects which listings we show — they are ranked by delivered price.

RYOBI P4221 18 VOLT CORDLESS GRINDER (TOOL ONLY)

$49.99Below typical

Free shipping · 99% seller

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Ryobi 4-1/2" 18v Grinder P4221TH (WMP021408)

$55.99Below typical

incl. $6 shipping · 99.6% seller

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RYOBI TOOLS P4221 (P19023233)

$59.99Below typical

incl. $20 shipping · 98.6% seller

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Ryobi ONE+ P4221 18V Cordless 4-1/2 in Angle Grinder Li-Ion Tool Only

$59.99Below typical

Free shipping · 99.2% seller

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Ryobi Tools P4221 4-1/2" 18V Angle Grinder With Battery (P03069134)

$66

incl. $15 shipping · 99.2% seller

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Ryobi Grinder p4221th

$66.09

incl. $26.10 shipping · 100% seller

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Ryobi Battery Operated 18v Lithium P4221 grinder

$66.76

incl. $19.77 shipping

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Ryobi P4221 18V Cordless 4-1/2 inch Angle Grinder, Tool Only

$69.88

Free shipping · 100% seller

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RYOBI P4221TH Cordless Power Tool Kit with Battery and Charger (P24039493)

$71

incl. $20 shipping · 99.1% seller

View on eBay

Ryobi P4221 ONE+ 18V 4-1/2” Angle Grinder Tool Only Tested Working

$84.14Above typical

incl. $56.11 shipping · 98.2% seller

View on eBay

RYOBI TOOLS P4221 WITH BATTERY AND CHARGER (P08040869)

$117Above typical

incl. $25 shipping · 99.7% seller

View on eBay

(9920677) Ryobi P4221 Grinder

$140.70Above typical

incl. $89.68 shipping · 99.1% seller

View on eBay

Prices include shipping and are refreshed daily. Availability changes without notice.

P4221 covers more than one configuration. Ryobi uses it as a family number — sellers list both the bare tool and the kit with batteries under it, and the part number alone does not say which. The figures above span both, so the range is wider than for a single configuration. Check each listing's title for what is actually included.

Common questions about the Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221)

How much is a used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) worth?
The median asking price for a used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) is $66.43, across 12 listings currently live on eBay. Most sit between $59.99 and $74.29. This is what sellers are asking today, and it is refreshed daily.
What is a fair price to pay for a used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221)?
Anything at or below $59.99 is cheap relative to the rest of the market — that is the 25th percentile of 12 live listings. Above $74.29 you are paying more than three quarters of sellers are asking. The middle half of the market runs $59.99 to $74.29. The cheapest listing right now is $49.99 delivered.
Are used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) prices going up or down?
Steady. The median asking price for a used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) was $69.88 on Oct 17, 2026 and $66.76 on Nov 14, 2026 — within 5%, across 13 live eBay listings.
How long do used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) listings stay up on eBay?
Listings for a used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) that have ended stayed live for a median of 8 days. A listing ending is not proof it sold — sellers also end listings unsold, and eBay relists some automatically.
How much do used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) prices vary?
Half of the 12 live listings sit within a $14 window, $59.99 to $74.29. The tightest $5 window holds 4 of 12, $66 to $70. 8 of 12 (67%) are asking under $70. These are asking prices across listings live on eBay, so the spread shows how much sellers disagree rather than how much the tool actually sells for.
What should I sell my used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) for?
Price it around $66.43 to sit mid-market, or at or below $59.99 to undercut three quarters of the 12 listings you are competing with. $74.29 is the top of the normal range. These are asking prices rather than sold prices, so they tell you where to start rather than what you will get, and buyers compare delivered cost — price with shipping in mind.
How many used Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) are for sale right now?
12 listings for the Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) are live on eBay right now, ranging from $49.99 to $140.70. We verify each one names this exact part number and is the whole tool rather than a part or an accessory.
Does the Ryobi 18V ONE+ 4-1/2" Angle Grinder (P4221) come with a battery?
It depends on the listing. P4221 is a family number rather than a single product — Ryobi sells the bare tool and the kit under part numbers that both begin with it, and sellers routinely write just P4221. The figures on this page cover both configurations, which is why the range is wider than for a single one. Check the individual listing title for what is included.

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See also: used angle grinders under $150 · all Ryobi 18V ONE+ tools · all Ryobi tools