ForeverFigs-
Right now at lowes, they have gone up since I purchased mine. I think in my area it's over forty ($45-$49) dollars.
Baust55-
If you are using it inside. Move near a window with diffused light. That way you don't have to use grow lights. That fan should work out. Keep air circulating. Heater not sure about. It stays warm in there if both zippers are closed. Unless the area where it will be placed is cold. Then the fan will make the temp drop.
Also if your pots have little legs or segmented on bottom, you may have to use a cut up box strips or plywood to keep them leveled. I have also used it when rooting is cups. Just don't keep it near the window. The light will harm the roots
I have started veggie seeds in there also