Can i actually buy an item that it worth 1 million and up in shops? ..is there a limit??

Yes, I'm not sure what the limit is, but I've seen items at like 50m and stuff.

Do you mean purchasing them from user shops? Yes, you can purchase any item that the owner of the shop has priced. The only thing is you can't price anything over 50 million I believe, but purchasing doesn't really have a limit besides the fact that you can't purchase anything worth over 50 million sP in user shops because they can't be priced in them.

Anything that Doesnt say 'Display Only' In a shop, you can buy. Keep in mind, things priced at 0, will be Display only, And anything higgher than 50,000,000 Will be Display only.

thanks for the info!!:D