Why is robux so expensive

It is mostly either because items on roblox can be very worth it, such at limiteds or expensive items, or simply because they want money. I myself don't get why it cost literally $20 to buy only 1,700 robux, honestly isnt worth it, even the one that you pay $100 for and only get 10,000. If they would lower their prices, I would be buying robux all the time. I don't even care if you got only 1,700 robux for paying $10, it's much more worth it. I feel this is kind of an issue. But I can't say anything because I don't know much myself.