Oh FFS climb down off your high horse long enough to hit the "report" button on the post so it can be fixed.
Now:
Firstly, Who expects "months" old sales to still be open anyway? If it's still available after that length of time it's overpriced or either it or the seller have other issues.
and
Secondly, Before you go off your brain you should know that up until aprox 6 months ago sellers could not mark their own sale as sold, it had to involve a sales mod and yes, some got missed which is why it now (thanks to a piece of specially written code from DR3M3L) it works as it does.
In other word you are ranting about something you have not been here long enough to comprehend.