Well, a hood is certainly an option
I always forget that when tallying things up.
I avoid walmart for purchases and usually use Petsmart, its literally next door just about. So any prices I state are their's.
10 Gallon: $8
Fluorescent hood: $25
Heater: $10-15
Penguin Mini: $22 (At petsmart)
Substrate from my understanding is not necessarily needed in a QT, since its a temporary holding tank. I would imagine regular 'aquarium' gravel would be just fine. Petsmart sells a large variety in many quantities. A 10 pound bag is like $7 or something.
So setup here is up to $70. The main point here though, as illustrated below, is better quality equipment.
Petsmart also has 10 gallon starter kits. I personally never buy these but buy seperate components as above. Its about $50 again, comes with tank and hoods iradescent or fluorescent I believe, a 'Topfin 10' filter and Topfin heater. I believe most of these components to be crap. The TopFin 10 will give you just the minimal amount of filtration needed for a 10 gallon in the long run (But this is a QT so you might not care). Their heaters are fine but I'd rather buy something from Marineland. Same for the hood. The hood is another 'Topfin' generic thing, same with the light. The hoods they sell seperately are again Marineland, with Eclipse lighting. I really suggest biowheel filters (Penguin Mini), regardless of tank size. Personal preference, but the biowheel is where all the good bacteria grows, so changing out your other filter media becomes a much less critical issue. The biowheels
IMO are also a lot harder to kill off. You could even remove it and float it in your other tank while medicating the other tank to keep it alive, and drop it back on after medication to keep the filtration up.
Heh. I should be a Marineland sales rep. Sorry, but I really do trust them far more than any generic equipment you'll find in those Petsmart and Walmart starter kits. Its for the life of your fish man, they're worth an extra $10-20