currencies property
This is a pre-compiled aggregation of item value and priceOverrideList, so that we have one place to check for what the purchaser must pay for the item. Use this instead of trying to piece together the price separately. The somewhat crappy part about this is that, now that item quantity overrides have dynamic modifiers, this will not necessarily be statically true. If you were using this instead of live data, switch to using live data.
Implementation
@JsonKey(name:'currencies')
List<DestinyVendorItemQuantity>? currencies;