Why you all shopping at BRS if price is a thing? They are nearly never the cheapest. Look around. You pay for all of those infomercials, points, giveaways, etc.
Check the sellers on Amazon and stuff. If they are in the US, then the product is probably fine... many are stores looking to offload product. Amazon will always accept a return for knock off stuff. SWA, Champion and many others offer stuff cheaper than BRS. If you want things like RO parts and supplies, you can buy many from the people who actually make them for a substantial discount... same with chemicals and media and stuff.
On things like this, why not check eBay or the local marketplace for use stuff. It isn't like the go bad. I have gotten Tunze Care on ebay for $20-30 and they work perfectly and make most other magnets look like childs toys.