Usually yes. Unless i see a good deal on mangaswap reddit that im looking for usually wait for specific publisher sales on rightstuf. Rightstuf is pretty much the cheapest place to buy in the US.
I mostly get them from Rightstuf sales for newer volumes, Barns and Noble sometimes when they do B2G1 Free. Also alot from the mangswap reddit. Amazon sometimes has really good deals to on specific volumes.