Villagers from 1.13.2 or below do not increase or decrease prices

Steps to reproduce:

1. Summon a villager with a custom trade:

   /summon villager ~ ~ ~ {VillagerData:{profession:farmer,level:2,type:plains},Offers:{Recipes:[{buy:{id:emerald,count:32},sell:{id:emerald_block,count:1},rewardExp:0b,maxUses:9999999}]}}

   /summon villager ~ ~ ~ {VillagerData:{profession:farmer,level:2,type:plains},Offers:{Recipes:[{buy:{id:emerald,count:32},sell:{id:emerald_block,count:1},rewardExp:0b,maxUses:9999999}]}}

1. Hit the villager -> the price does not increase as expected

2. Infect the villager and cure it -> the price does not decrease as expected

3. Give yourself hero of the village -> the price does decrease

   /effect give @p minecraft:hero_of_the_village

   /effect give @p minecraft:hero_of_the_village

Also, would like to request ownership to maintain the report.

The prices of custom trades do change - you just have to specify the priceMultiplier NBT tag (see MC-175018). The part about old villagers not changing their prices seems like a valid bug, though.

Thanks j_p_smith! Using /data get entity {UUID} Offers, there was no price multiplier for the 1.13.2 villagers which is why it's occurring. Is it intentional that hero of the village discounts trades without a price multiplier? If so, I could probably remove that from the report.

Yes, I'd say the Hero of the Village part is probably intended.