You can rinse the wound in dilute betadine and apply a little neosporin to help stop any infection.
as far as setting things up cheaper..its easy!
you can buy the tank at walmart (about 9$ for a 10g), or just use a rubbermaid.
Instead of using a reptile UTH you can use a human heat pad, the kind they sell for muscle pain. I got mine at walmart for 12$, its too big for a ten gallon, but you can easily only put half of it under the tank.
aspen shavings: walmart $4
hide spots: anywhere! anything! You can go as cheap as rubbermaid or flower pots.
Water dish: rubbermaid again! ain't it wonderful stuff
Thermometer: digital with probe, walmart 6$
God i love walmart! Home depot is pretty good too 
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0.1 Bearded dragon (Hannabil)
0.1 mexican Black kingsnake (Morticia)
1.1.2 Leopard Gecko's (Pogo, Louise, Orion, Jeffrey Nothing)
0.0.1 Tokay Gecko
1.0 Blue Tongue Skink
0.0.1 Reverse Okeetee Corn (Autumn)
0.1 Bullmastiff (Asha)
4.1 Cats (Poe, Tucker, Abhid, Felicity, Emmy)