The misunderstood middle child of the SMG family, the UMP45's small magazine is the only drawback to an otherwise versatile close-quarters automatic. It has been painted in a marbleized pattern.
UMP-45 Mudder(WW)
Skinport 💸 0% · 8% · 0% Best price $0.02 
CSFloat 💸 0% · 2% · 2.5% $0.03 
White.Market 💸 0% · 5% · ? $0.03 
Market.CSGO 💸 0% · 5% · 5% $0.04 
DMarket 💸 0% · 2% · 0% $0.04 
Waxpeer 💸 0% · 6% · ? $0.13 
Lis-Skins 💸 0% · 5% · ? $0.13 Steam Market 💸 0% · 13.04% · ✕ Open 
CSBoard 💸 0% · 0% · ? Open 
SkinBaron 💸 0% · 15% · ? Open 
CS.Deals 💸 0% · 2% · 2% Open 
SkinOut 💸 0% · 7% · ? Open 
Tradeit.gg 💸 0% · 10% · 5% Open 
CS.TRADE Open 
CS.MONEY 💸 0% · 5% · 0% Open 
BUFF163 
💸 0% · 1.5% · 1% Open 
YouPin898 💸 0% · 1% · 1% Open C5 C5Game 💸 0% · 5% · 0% Open 
IGXE 💸 0% · 1% · ? Open Price context Well-Worn
Daily median on the Steam Community Market, Aug 11, 2020 – Sep 24, 2026
- All-time high
- $10.63
- All-time low
- $0.01
- Past 12 months
- 53%
- of days were cheaper
- Sold in 30 days
- 619
- Steam
Compare with
Skin facts
- Weapon
- UMP-45
- Rarity
- Consumer Grade
- Drops from
- 11 souvenir packages
- Released
- September 1, 2018 · CS:GO
- Drop status
- Souvenir packages, not in the drop
- Float range
- 0.06–0.80
- Wears
- FN · MW · FT · WW · BS
- Versions
- Normal · Souvenir
- All-time high
- $10.63 · August 7, 2026
- All-time low
- $0.01 · October 7, 2020
- Past 12 months
- 53% of days were cheaper
- Sold in 30 days
- 619 sales
FAQ
How much does UMP-45 | Mudder (Well-Worn) cost?
UMP-45 | Mudder (Well-Worn) currently starts at $0.02 — the best price across 7 marketplaces. Prices refresh about once an hour.
Where to buy UMP-45 | Mudder (Well-Worn)?
The cheapest offer for UMP-45 | Mudder (Well-Worn) right now is on Skinport at $0.02. It is also listed on CSFloat, White.Market, Market.CSGO; see the full comparison in the market list above.
Where to sell UMP-45 | Mudder (Well-Worn)?
You can sell on the Steam Community Market (~13% fee, money stays in Steam) or on marketplaces with cash withdrawal: CSBoard (0%), CSFloat (2%), DMarket (2%) — lower fees and real payouts.
What were the highest and lowest prices of UMP-45 | Mudder (Well-Worn)?
The highest daily median price of UMP-45 | Mudder (Well-Worn) on the Steam Community Market was $10.63 on August 7, 2026, and the lowest was $0.01 on October 7, 2020. The price history starts on August 11, 2020.
Is UMP-45 | Mudder (Well-Worn) expensive right now compared to the past year?
On September 24, 2026 the daily median was $0.03. Over the past 12 months, the price was lower than that on 53% of days. 619 copies were sold on the Steam Community Market in the 30 days up to September 24, 2026.
Where does UMP-45 | Mudder drop from?
UMP-45 | Mudder drops from 11 tournament souvenir packages. UMP-45 | Mudder is part of The 2018 Inferno Collection.
Is there a StatTrak™ or Souvenir UMP-45 | Mudder?
UMP-45 | Mudder has a Souvenir version, but no StatTrak™ one.
What float range does UMP-45 | Mudder have?
The float of UMP-45 | Mudder runs from 0.06 to 0.80, so it comes in 5 wears: Factory New, Minimal Wear, Field-Tested, Well-Worn, and Battle-Scarred.
When was UMP-45 | Mudder released, and does it still drop?
UMP-45 | Mudder came out on September 1, 2018 for CS:GO. The collection is not in the weekly drop pool: its skins come from tournament souvenir packages, and both the packages and the skins trade on the market.