The rule is/should be that when you post that you will buy the item for sale then you have to comply with the terms that are laid out by the seller in the thread. In no way should #1 happen...ever! #2 is simple, you post "I'll take them if you ship to the Phillippines", then it's up to the seller to ship but honestly shipping constraints should be spelled out in the OP of the sale thread anyway. If I saw that in a for sale thread and I wanted the chips too, I would simply say that I would take them if first deal falls through. All the rest of the scenarios could be handled in the same way. People have every right to keep posting "I'll take them" or "Dibs" or "Mine" until the thread is marked SOLD. But as a seller, I would hope that they start with the first non-asshat who posted interest and go from there.The problem is that there are just way too many valid reasons for the first "dibs" to not get the sale.
Examples:
- Mr. Dibs follows up his "dibs" with a PM saying "Hey, I'll take these. Can you do $250 instead of $300 though?"
- Mr. Dibs follows up via PM requesting, "I'll take the set of Mapes, do you ship to the Philippines?"
- Mr. Dibs follows up via PM saying, "Sweet, I've been waiting for these. Do you accept credit cards?"
- Mr. Dibs follows up via PM, "I'll take them. Can pay in trade. I've got some red starbursts for you!"
- Mr. Dibs posts "dibs" in the listing but it isn't seen by the seller because Mr. Dibs spams every thread he posts in, landing him on the seller's ignore list.
- Mr. Dibs has had some shady deals in the past and the seller doesn't want to sell to him as a result.
- Mr. Dibs is just generally an asshole to the seller and he just doesn't want to sell to him.
and on and on...
The fact of the matter is, no deal is done until payment and terms are agreed upon privately via PM anyhow. Out of the more than 100,000 sales that have occurred here, every single one of them gets finalized via PM. There is no reason whatsoever for people to need to call "dibs" and have that be meaningful. It just causes way more problems than it avoids.
I don't know, this has never been an issue for me so again, I might just be naive.