Its worth checking out though, right? Is it not? Just because the price is low, doesn't make it a deathtrap. This isn't a hollis or drayger--Its a much lesser known company. Not easy to find a price reference point, the guy doesn't dive and is probably just trying to get rid of it. The company, OMG actually supplies gear to Italy's navy, so it has to be decent. As for the sensors, I was unaware O2 sensors cost that much to change. Im new to diving, and (clearly) know little if anything about this rebreathing stuff, so helps appreciated. Are there any budget rebreathers around less than 2k that you guys recommend? And this $800 rig is going to be a lot safer than the pvc and vacuum cleaner hose contraptions I see in the DIY rebreather subform.