I'm curious what collectors here think of fellow collectors/buyers/dealers/etc who try to "backdoor/ruin" your deal. Say for example you buy a item at a good price. But then a fellow collector tells the seller after you and the seller made a deal that they shouldn't sell it for that price and should get more money. Just curious what people here think about others trying to ruin deals and stuff...

And the funny thing is I'm sure most of the time these people who do message sellers after a item sold and says its worth more is only doing it so the other buyer don't get it. I'm sure if they were the one offered the good deal they would take it and not think twice or tell the seller no its worth more.