tbh it depends on what you have on your list.
I easily spent 250 without and decoration and at least another 20 on some decoration (am in the middle of making a fake rock background and i bought some slate tiles / rocks).
min you need is...
Viv min of 3'x2'x1.5 (wxdxh) preferabably a 4'x2'x2' or as big as you can afford / fit.
Spot light fixture (ceramic)
Uv tube with a min uv output of 10%, pref 12%
UV tube reflector
2x digital thermometers
Small water bowl
Bowl for veggies / salad
Decoration for viv
Plus don't forget all the little bits like calcium dust, nutrabol (vitamins), disinfectant, something to keep your live food in etc.
Don't think i have missed anything, but it wouldn't surprise me if i have.