Add a candidate item (enter values, then "Add Item")
Slot utilization0%0 / 0 pedestals
Total daily income0Gold/day
Upstairs ROI—days to break even
Items to sell0after best N fill pedestals

From Tools Design.md Tool 2. Upstairs expansion cost is community-reported (~750M, single source). The 12-pedestal count after Upstairs is a working assumption — verify in-game.

Museum Income & Sell-vs-Display Strategy
Museum Income & Sell-vs-Display Strategy 64,000 views · 9:32 Radex Tips