Any of the stores in the OP should carry them. AmiAmi will probably have the best prices for them, going by previous Play Arts kai releases, though HLJ and Hobby Search regularly sells them at a discount as well.
Just saw a couple pictures of Final Fantasy VII Remake character figures from Play Arts. What are good sites that I can preorder these from when they're available as I'm not a figure collector but definitely interested in getting the entire set and I know from my Amazon/eBay lurking as well as this topic these figures require small fortunes to buy after they're sold out.
However, I must note that the recent AC Cloud PAK re-release wasn't marked down much at all, anywhere (and, in this case, AmiAmi was one of the most expensive places to buy him). Cloud is the most popular FF character, so you might have to pay full price for his Remake PAK.
At any rate, be prepared to pay $90+ each no matter what store you order from and/or how big of a discount there is.