Look down the road. If you just need a box to weld sheet metal, you can get a lot of them that will do it.
That being said, the next thing is lifespan. How long will this box last? Will you be buying another in six months, or will you be stuck because it doesn't work and you can't get any replacement parts or consumables? (hint: you won't have this problem with the major manufacturers)
Now, how much do you rely on it? Do you use it once a month? Once a year? Six hours a day?
Are you going to outgrow it soon? Say, start to make gates and railings? And this cheapo won't do it or die first? Now you have a boat anchor and have to go out and buy a real machine, and have just flushed $$ down the tube. 110 will do the thin stuff, and do it well, but you may want to do thicker stuff when you start learning.
Assess your needs, both today, and a year from now. Buy accordingly. It's cost effective.
Also, consider used, as you could probably buy a good used machine.
Steve
AWS certified 2g, 3g, 4g, 6g, 6gtig, 2gfcaw caisson, and others I forgot. Former steel erection contractor, and welding since 1974.