I don't know about the rest of the world, but that just rubs me the wrong way.
Cajun says he's got a widget for sale. I write him and say, "I'll take it".
That means the widget is sold. Not "Sold pending funds, because Alpo is not to be trusted, and might just back out of the deal and not send me any money, so it isn't really sold yet", but "SOLD".
I said I'll take it, so it's sold.
Now, if for some reason, the deal falls through, and I can't take it, then Caj can relist it as "for sale again 'cause that worthless Alpo renegged". But, until I "don't pay", it's sold.
I find it insulting.