Reggie, i had a similar situation. i specified in ad "USPS priority insured". he insisted on ups, fed-ex, or dhl plus several other stipulations. told him i'd think about it. day or so later i told him i wasn't instested in selling to him under his terms. the mango went and bid on it then sent a really snippy email complaining i didn't answer his question. i told "not interested" was a legitimate answer. and further, DHL won't ship firearms period, our UPS facility's managers won't accept firearms from individuals and fed-ex was too high. i explained to gunbroker and they cancelled the listing for me (he was the only bidder and i was not selling to him under any circumstances after that).
i blocked that bidder and just on the outside chance i figured out who he was on ebay and blocked him there as well. turned out to be a real good idea.
my POV is i'm not a business. ebay and gunbroker exist for my convenience and i won't have my terms dictated to me by a buyer. i'll consider requests. but i'm under no obligation to go along with anything i don't feel good about.
it's your gun; it's your choice. key in on "your".
roger
