(HEEEELP!!) K-Pop in NYC? ♥

Hi♥
I'm peruvian. I'm going to NYC *--* And it's my third time going to USA, the first two times I went to Orlando ^^
My dad knows I'm a K-Pop lover and he said me about Koreatown, and I' going to visit Koreatown *O* So, I've been searching about k-pop stores in Koreatown in Google, and I found Koryo Bookstore.
I want to know if K-Pop stuff there is expensive or how does it cost?, because here in Peru, K-Pop original stuff is expensive ;;

sorry for the bad english ;;

I don't know if you already went or not but I'm from the city and I've been to that store before I think...is it the one next to the face shop? If so that place is soooooo expensive. I think online would be cheaper? But besides that Ktown is awesome