So because it's single stage does that mean I am susceptible to end of tank dumps?
It's possible. Mostly, though, you just need to know what you're getting. CO2Art is an intro-level rig. It might be a bit better than Aquatek/Milwaukee/Azoo/etc., but they haven't been around long enough to know for sure. If you're going to get an intro rig, that's not a bad choice. It's not *good* by any means, but it will probably work for you, until you figure out what you don't like about it. Unfortunately, you're going to spend a couple hundred to upgrade, and there's not much, if anything, you're going to want to keep from it. But that's down the line. For $55, if I didn't know anything about pressurized CO2, I'd do it.
I would make sure it's got a CGA320 nipple/nut on it. Looks like North American plug, but best to be sure. They come from the UK, after all. And I suspect the threads for the nipple are, at best, 1/8" NPT (instead of standard 1/4" NPT), and at worst, BSPT or something else odd, so no matter what, if you had to replace the nipple, it would be complicated.