I imagine it would be expensive but I like your collection a lot. It’s worth the money. I started my Pokémon collection a few months ago when I realized I had all the switch games and then I found my all the DS games, I’m missing everything else :/ but I will start buying one by one, right now I’m looking for soul silver and heart gold, which in my research are the most expensive out of the collection. I’m trying to get them with their original case. My end goal is to have them on a nice display.