Change item deals comparison quantity rule

[Nakroma]

I'm submitting a...

• [ ] Bug report
• [x] Feature request
• [ ] Documentation issue or request

Current behavior Currently the item deals API only shows items with quantity >3 to avoid inflated prices.

Expected behavior Maybe this is worth changing for server comparison, so that the quantity only needs to be >3 on one of the two servers. Or change the filter to not look at the current quantity but on the avg. quantity over the last month.

Minimal reproduction of the problem

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Additional Description