That's why there is only one LFS that I buy from. It is the only one I trust. Others may be cheaper, but....LFS are too predatory IMO.
Just one example: Hobbyists should not have to QT fish from an LFS. The LFS has an obligation to sell you something that isn't going to crash your tank. Stop apologizing for them and making up excuses, "ThHaT wOuLd Be impOsSiblE" Figure it out, you run the store! Not me.
When people accept, jusifty, and apologize for poor business practices it's gonna be bad news for a hobby.