Lots of things factor into the sunglows and snowglows and the like. Lots of times it takes several seasons to get the bright colors from line breeding to get the best colors. You can always find ones that the colors are not as bright or dim for less money. But for the real bright dark colors with great patterns can take years to produce so a higher price comes with that.
well quality, breeder reputation, and lineage. those pay a big part on the price of the gecko. You can find them from 50.00 to 500.00 plus. Just depends whos breeding them. But this may be just my observation on pricing of leopard geckos. Often you will find better prices with smaller breeders, though this isn't always the case but I have seen it be the case more often than none. Keep searching for the morph you like and eventually you will find one you can afford, don't break yourself on money for a gecko, also reptile shows are a great place to find good deals on geckos.