For some strange reason they have the worst search facilities of any large online trader apart from ebay.
If you want to find a particular make of car with particular appointments forget Trading post. You might be just getting close and they'll tell you it's timed out.
What is so hard about writing a decent search program complete with all criteria?
The other most irritating thing they do is list several categories which are the same, but have case sensitive differences or misspellings, so you have to do separate searches for each of these minor categories.
In other words, there's no intelligence lurking in their system.
Plus they're too bloody expensive.
I hope they go broke.
Check out the HTML of one of their pages sometime. It must have been written by a computer or an idiot, it's just way too complicated.