If you want all your fish to be healthy and not have to worry about maintaining them like crazy, spend more money. If you want to spend like 10 bucks, be prepared for a hell of a lot of maintenance and some fish in decent condition. Thats pretty much the truth and you cant really escape it unless other people give you equipment or you build your own, then you can probably spend a lot less.
From my experience, when you buy equipment, its best not to buy the cheapest thing. I always buy the mid-high or high end stuff. My dad always taught me that if you buy something, buy the best or you will end up paying for the best and getting the worst. In other words, if you buy something cheap to start out with, you will end up buying that thing many times. With all that money you spent buying that, you couldve gotten that high end thing you shouldve gotten in the first place. It is like that with any kind of equipment.