Across 30 markets the BS floor moved +10% in 22 days: $0.040 → $0.044.
Sources: Valve item data · our 30-market price snapshot.
How much does UMP-45 (Mudder) cost?
The current floor for UMP-45 (Mudder) is $0.044, compared across 30 marketplaces with fees included. By wear: FN $1.18 · MW $0.060 · FT $0.034 · WW $0.038 · BS $0.044.
Where can I sell or cash out UMP-45 (Mudder)?
The best net payout right now is $0.020 on DMarket after its seller fee — the Sell tab ranks every venue by what you actually keep.
Does UMP-45 (Mudder) come in StatTrak or Souvenir?
Yes — this skin also trades as Souvenir (from $0.044). Use the Quality pills above to switch; every number on the page recalculates for the selected variant.
How do I get UMP-45 (Mudder)?
It drops from London 2018 Inferno Souvenir Package (the container itself trades from $14.59), or you can buy it directly from $0.044 on the marketplaces above — buying a specific skin is almost always cheaper than opening containers for it.
London 2018 Inferno Souvenir Package
Inspect a BS copy in game 
