Depends on choices you make, but the enclosure itself should run anywhere from $3 to $20, ~$15 for the digital thermometer/hygrometer, ~$10 to $20 for the heat pad, $1 for a roll of paper towels, free to $20 per hide, free to $10 for the water dish, pennies for water and electricity daily, ~$10 for a soldering iron if you don't have one. Going cheap, that works out to $5+$10+$15+$4 ($1 ea. for hides, water dish, substrate) = $34.