Profit Formulas:

Break = Sum(Item Sell Prices − Tax per item) − Set Buy Price
Build = Set Sell Price − Tax − Sum(Item Buy Prices)

⚠ Tax Note: GE charges 2% on each sale (capped at 5M per item).
Breaking sells multiple items (paying tax on each), while building sells one set (paying one capped tax).
This is why breaking high-value sets like Torva can show negative profit despite similar prices.