When I had a custom golf club shop and LDers would come in. I found them to be PIAers. They wanted everything free or cheap and always said, I will make you famous. I always referred them to other clubmakers as I did not want to deal with them.
When a vendor called looking for my business and all they could say is: My stuff is loved by LDers, I would reply. Not my market. Thanks for calling. Bye.
I also blew away most when they said they were active in Golf Chats as they mainly wanted to argue or say so and so in the chat does this for less money. I would say, fine. Go with them. Some came in and said I built these irons now I would like you to test the lie. I would say fine. That will be $40 for testing you and $5 per club to bend. They would say what if the lies are good? I would say I still get the $40. On clubs I built I offered free, lifetime loft and lie adjustments.