I run a AAA Art studio, so I can give you some insight on cost to develop these high quality assets. Normal AAA quality character model would cost about 5-8k USD to create. So in retrospect $70-$100 per model isn’t bad pricing at all, especially if you never know if you are going to make it. Imagine if these didn’t exist and you had to spend hundreds of thousands to make your hobbyist game. Just be thankful these quality packs exist for these amazing price points.