OK, was bit brash, I just think people knock the convenience factor
far too much, and with many other things, am all for bulk buying and value for money and going the professional route...
..but I do think that advice to beginners to invest a lot of time and money in getting thoroughly geared up for MIG gas, when, whilst learning, often in situations where portability and low footprint maybe an issue, to
always denigrate the convenience of hobby bottles can be counter-productive... I actually changed
back from expensive, heavy and cumbersome gas bottles to hobbies for that very reason, although now pretty experienced and confident with MIG (a Johnny come lately gas welder), I'd need a pretty big project to re-invest and revert
Until you are sure this is going to be your thing, stick with the original hobby bottles would be my advice, if that's what the package came with!
just don't overdo the gas shroud flow rates, and make damn sure there are no leaks in those quick-fit connections and that you turn the gas right off every time! Do not believe this 10 minutes thing, have heard it all before and IMHO they last at least 11minutes..

OK. Also, there were deals when I bought a new Clarke for an extra 3 bottles at a decent price. You can also get a wide variety of gases in hobby bottles, some cheaper than straight C02 itself