leopard geckos are very easy too keep. they dont eat too much, it depends on the food size though.obviously they will eat more of smaller feeders. how expensive they cost derpends on where you get it but i got mine from a pet store for around 25 dollars. a lone leo only needs a 10 gallon tank and a heater for that size so housing isnt that expensive. i use reptile carpet for them, it makes cages much easier to clean (i just throw them in the wshing machine when they need to be cleaned). they also need two hide spots, one on the warm side and one on the cool side. this should be a 'humid' hide, that cn have moist moss in it to keep it moist. it aids in them shedding. they need a water bowl adn a calium bowl and if you want a food bowl. i just feed them by hand, its much more fun
once you get the housing and the gecko they are pretty cheap to maintain. all they need basically is food.
by the way, once you get them used to handling they are great T.V. watching companions :wink: