I think any seller should keep in mind that once a person buys something from you, from that point forward communication with that buyer should be a key point. If I ask a question about my order I expect a timely response, it doesn’t have to immediate but shouldn’t be 2 or 3 days or even longer before I hear something, or just be ignored entirely. If you just go dark on someone after they spend their hard earned money, don’t expect to be a seller for very long no matter where you sell those goods.
If you are a business that sells on here, you need to understand that once someone buys something from you that is just the beginning of what should be a good relationship, especially if you want that person to buy from you again, or better yet recommend you as a seller to other people so you can grow your business.
I don’t like giving sellers a negative review that could have an effect on their ability to make a living. As a last resort and after exhausting every other effort, I will let others know how my experience was as a warning of what to expect if they decide to purchase from said seller.
I have bought almost all of my equipment from PS Audio, not only do they sell very good audio equipment, their customer service is second to none. I had a problem with my BHK pre-amp a few months after the purchase, ended up having to send it back for repairs, had it back withing a week of sending it back to them. They bent over backwards to make sure I was taken care of. That is only one example, any time I have had a question they always provide the answer within 24 hours unless it is the weekend or a holiday. Exemplary service!
Bottom line, if someone has a bad experience with a buyer they will probably never do business with them again, or recommend them to others. Customer service after the sale should be a natural part of your business, and one that you should take a lot of pride in. Just my 2 cents, for whatever that is worth. Sorry for the long winded post.