The price someone advertises something for, tells you nothing about the price it was actually sold for, nor the circumstances under which it was sold: haggling via PM, a skint vendor, an ignorant buyer, a favour owed or returned etc.
There's no convention, it's just the "path of least resistance" to indicate a sale: replacing £50 with sold, is easier than £50 sold.
Having said that, I'm sure there are just as many ads where the item is sold but the ad isn't updated in any way.
The price someone advertises something for, tells you nothing about the price it was actually sold for, nor the circumstances under which it was sold: haggling via PM, a skint vendor, an ignorant buyer, a favour owed or returned etc.
There's no convention, it's just the "path of least resistance" to indicate a sale: replacing £50 with sold, is easier than
£50sold.Having said that, I'm sure there are just as many ads where the item is sold but the ad isn't updated in any way.