Screwed Around

I understand many breeders deal with people messaging and wasting your time with wanting pics and invoices. Question though if you have a buyer that messages and asks about availability and then asks about shipping would you assume they want to buy? I just was in process of trying to buy a bumblebee ball and was an active conversation my next question after shipping was how do we proceed and I get it’s been sold. This was not over a day or two period if so I could see but it was not and I was obviously wanting to purchase. This is some fuckery and I know buyers play games and try to scam but sellers shouldnt play games either