How much do petco salamanders cost?

A Word of advice - do not deal with a 'general' pet store if you're wanting a reptile ! Do some research on the particular reptile you're interested in first - then go to a specialist shop or look for specimens for sale though your local paper. No disrespect to Petco - but - places like that simply do not have the time and experience to give you the in-depth knowledge you need ! Your local library will be able to get hold of hundreds of reference books on reptiles.