SellItemAmount
The SellItemAmount is what the NPC will say when choosing how many of an Item you want to Sell.
It is possible to include more than 1 speech if you want to but you can't add a Time and Day.
Defining SellItemAmount looks lke this:
SellItemAmount: ["How many {1} would you like to sell?"]
{1} = chosen Item's name (plural) (for ex. "Poké Balls")

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