You are right. 1 US Dollar was 1.8 Turkish Liras a couple of years ago. Now it 2.8. For international products, they are more expensive in 3rd world countries because Euros or Dollars are more valuable than the country’s national money. So it’s better for them to make content and sell on marketplace. And there are no restrictions as far as I know. I think the thing here is the developer decides his own strategy. There are great things in marketplace cost about only 5-15 USD. And there are big packs with the price of 90-120 USD. Personally -especially in the models section- %80 of them are overpriced. There are exceptions though like Yoeri’s cave pack, steampunk etc. The overpriced ones are their owners’ decision. If they wouldn’t be satisfied about the sales they’d reduce the price. They are ok then.
But overall, the whole marketplace experience is amazing I think. I remember it’s first days and now… it’s incredible for it to become this big in such a short time. We must sure know how to save a few dollars for bundles 