Possibly i'm an idiot and can't find this feature, possibly it's not not avaliable, but...

There is another website I frequent, where you can set up an alert such that when an item is listed that meets your search criteria, it sends you an email and a link to the listing.

The other site is set up a little different, but if the marketplace could have a feature such as this, it would be awesome.

Thanks, keep up the good work.