You don't tell a shop to anything. If the price is not satisfactory, you walk. They are not your only source and you are not their only clientele.
some people shop Walmart and other jump a Jet to London or Paris.
Thread started silly. Someone buying something they know nothing about.
Copper = industry standard 100% conductive
Silver - (later applications) found to be BETTER = 105%
Only O-ring in a Nemesis is to stabilize the top cap AIR Ring. Not even a concern with most top devices used on mods and - Not a Required part for safe use. Certainly not something that warrants Mod Replacement. Just part replacement.
Plenty of correct fit o-rings available at most any hardware store - Lowes/home depot/Ace and on and on.
Sorry - first you would need to know the shop - are they profit whoring or no.
We have a local shop whos pricing is higher than most - Difference is in Value of service. They have a flat out lifetime warranty on all mods, chargers, hardware - not consumables - right down to their EGO type batteries. They have very strong financial backing and I doubt they are going anywhere by choice.
First of all I know what the o ring is for, second I'd prefer to have everything that is suppose to come with a brand new product I purchased, and not having to purchase something that should have came with it, and I prefer for my cap to be snug and not possibly fall when removing my atty, call me crazy. Third I checked Lowes the same night as I stated already, they didn't have the correct size, so no it can't be found at any hardware store. Fourth the mod is still unused, and buying something that is not the same thing you decided on, does warrant an exchange if someone may have only wanted that particular version.
Excuse me, if your judgmental ... is so perfect, and since day one, you've known everything without asking anyone, or have gotten the same exact answer each time, that I had not, that my thread is "silly" to you. OH, and yes I know nothing about anything, since I asked a simple question, NOT about an o-ring but about which pin would be better, since I was told copper is better and also told silver was and that it made no difference. So me asking that question, to try to get more reliable information, from people on ECF with more knowledge and or experience than me and people at my local B&Ms to verify so I can learn something I didn't know, to you means I know nothing. Sorry I thought that was the point of a forum. But, I obviously know nothing.