GO ELSEWHERE if you're just a regular homeowner who needs to trust the salesperson in giving you the right part. I get that Mesher focuses on commercial customers, and yes there are signs saying all sales final...but their customer service sucked for this non-commercial customer. I recently went in for a part to repair my toilet. I made it clear that I'm not a a plumbing expert, and that I'd already picked out the wrong part at another store because there are a few similar varieties that aren't easy to distinguish. Mesher is set up that the salesperson goes in the back to pick out the part and bring it out to the customer. The salesperson brought out several versions, looked at my broken part, and then showed me the two that he said would work. I trusted he was right...but when I got home I saw that he'd sold me another wrong version. When I brought the part back, unused, he said it was not his fault and that I'd get no refund. Another salesperson who overhead the dispute suggested that I could get store credit, which would have been fine by me. The original salesperson, rather grouchily, went back to check with the accounting department and came back with a terse no. This wasn't an expensive part, so I chalked it up to a learning experience and left. Bottom line - if Mesher is going to elect to sell to non-commercial customers who aren't experts, they should take responsibility for bringing out the wrong part or let the customer go back their supply room to pick out the right part. Or they shouldn't sell to non-commercial customers. I hope the $7 they didn't refund is worth this negative review and the fact that in the future, I'll take all my business to nearby Standard Plumbing Supply...who sold me the right part for a little more money but a ton of better customer service. I'd advise anyone else like me to do the same.