The Badger 250 was the first airbrush I owned. I purchased it around the time I was in the sixth grade with money I had earned delivering newspapers. At the time, it was a big deal for me, but that was over fourty years ago now.
It worked fine for general applications, such as base coats or sealing my work, but it truly is more of a spray gun than an airbrush. The 250 has a very tough time dialing in thin lines, such as mottling on a Me 109.
Most of the 250 sets come with cans of propellant, which is another set of headaches that become expensive over time. The plastic body was another point that I didn't care for - it makes things awkward to use with that jar hanging off the end. I replaced it with a metal body 155 before entering high school and haven't looked back since. The 250 went into a box where it stayed until just a few years ago when I passed it on to a neighbor lady who wanted to get into ceramics, which doesn't demand the level of precision and detail that modeling requires.
The advice you've gotten to save your money for a proper airbrush is spot on.