Every item in Storage Hunters Open World is valued using the same formula. The base retail price is multiplied by the condition factor (0.0 to 1.0), the star grading multiplier (1.0 to 3.0 for three stars), and every active mutation stacked multiplicatively.
Standard spawn mutations include Rainbow (100x), Secret (50x), Void (35x), Hologram (15x), Chrome (12x), Gem (10x), Diamond (8x), Corrupted (6x), Gold (4x), Silver (2x), Huge (2x), Tiny (2x), Mint (1x), and Dirty (0.8x).
The Time Capsule at the Shopping Mall rolls every five minutes at a 3.125% base chance and applies one of four time mutations: Timeless (12x, 0.025% per tick), Ancient (5x, 0.100%), Antique (2x, 0.500%), or Cobwebbed (1.2x, 2.500%).
Washing a Dirty item at the Mall is free and offers a calculated reroll. The best non-Spotless outcome is Pure at 1.875x, while Spotless — the rarest wash result — pays 3.125x.