I have one. It's... whatever.
We toyed around with doing a few mods to make it a bit more usable. Inside a CQB space, like Picton, it could actually be a devastating little toy when combined with thermal. Once you start going beyond 100 feet, it's usability falls off pretty fast. At night, it's a giant screen giving you away, however I've used it in a defensive position known to the enemy to see people approaching through bush my NVG's weren't picking up.
I've had to go out of my way to make it useful. If you want a super cheap thermal in that price range, the FLIR TK is it. It's not going to be as good as a full sized thermal, but lightyears ahead of the TP units at pretty much the same price.
The only thing I can say I liked about the TP was it's virtually unlimited battery life. It lasts forever in thermal terms.