Yup, seems most buyers just don't realize these are literally garage or basement shops. Not serious retailers where it's their full time job to answer emails and deal with inventory. I've known a couple of guys that
have dabbled in this kind of thing as alot of us here on this forum have too, and thats what really turns them off of it. Getting home from a full time job in some cases weeks away from home and dealing with customers that want their $10 part yesterday. Of course you have to have some credibility and customer support but I understand things in this small niche hobby just take time. Especially for handmade aftermarket products.