Rubik gives away thread and cardboard boxes for free

[hexagonrecursion]

Describe the bug

The exodii trader - Rubik sells many items kinds of items. Surprisingly they are willing to part with a pile of cardboard boxes and bulk quantities of thread for a total of $0.

Steps to reproduce

1. Load this save
   free-loot.zip
2. Trade with Rubik
3. Buy all the free stuff

Expected behavior

Rubik should charge me for thread, cardboard boxes etc.

Screenshots

Versions and configuration

• OS: Linux
  • OS Version: LSB Version: :core-4.1-amd64:core-4.1-noarch; Distributor ID: Fedora; Description: Fedora release 34 (Thirty Four); Release: 34; Codename: ThirtyFour;
• Game Version: cc10e0c [64-bit]
• Graphics Version: Tiles
• Game Language: English [en]
• Mods loaded: [
  Dark Days Ahead [dda]
  ]

Additional context

No response

[LeahLuong]

Many merchants will occasionally offer "free" items. I like to think they're happy to be rid of those cluttering, low-value things.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. Please do not 'bump' or comment on this issue unless you are actively working on it. Stale issues, and stale issues that are closed are still considered.

[andrei8l]

This was just an integer truncation error and I'm pretty sure I've fixed it in #58141