I went to petco to get some gerbil food and I took a look at some of their prices. I think that they might have jacked them up. example-50gallon salt (Instant Ocean)= $18. That doesn't sound right.
Petco prices are a little high. I try not to buy anything there eccept frozen food which is actually reasonably priced. I have another store in town that I get most of my suppies from or else I order it from the net. Dr Foster and Smith has pretty good prices. 50 gal salt is only 10 something.
Aquariumguys seems to have very competitive pricing, so i doubt you will find any huge difference at any other place. And their service is great. Did you use the MFT 8% discount code to total up that $190?