Buying from Villagers in Numismatic Overhaul

Villager and wandering-trader prices are rewritten the moment their offers are generated. Anywhere a trade used to ask for emeralds, it now asks for coins of equivalent worth, and anywhere a villager used to pay you in emeralds it pays in coins instead.

Because the conversion happens to the offer itself, this covers professions added by other content as well — if it produces an ordinary trade, it gets priced in coins like everything else.

The purse button appears on the trading screen too, so you can top up mid-transaction without closing the villager.