If I have multiple cards a few hundred Yu-Gi-Oh cards would they be able to offer on them or should I should bring my more valuable cards that'll be around like 30 cards since If I bring to many they'll be considered a waste of time checking?

A card store with always and always give you 40% or less market value. You're best bet is ask people playing there or ebay. They need to make their profit for rent and utilities. Player will easily give you 70% from your asking price.

Hello, we can check the cards you bring in, but we only accept certain cards games like Yu-Gi-Oh!, Magic, Pokemon, Vanguard, and some Digimon.

Thanks I plan to vist soon and the prices don't really matter to me personally just want to get rid of them to be fair to invest them in other places. Thank you for the responses!