A reptile heater is not the sort of thing you want to go without owning.  If you are an owner or prospective owner of any reptile, you should be aware that it is most important to know the temperature that your reptile must have in order to survive.  The cost of these things is not what is important.  It is imperative that the animal is kept in a condition that is humane.  As far as cost goes, Reptile Heaters range anywhere from twenty to fifty dollars.  This is hardly a large expense, and will go a long way to keeping the animal healthy.