There are some realy good chargers, cheap. Sometimes its a crap shoot and you also need to find a power supply
But I dont know how many times, almost everytime I am in my LHS picking up small replacement parts I see somebody new to the hobby spending way to much on batterys or chargers or motors....I just want to say "wait, Just go home and save yourself $100 and get it online." Hobbypartz can have it to you in 2 days. most of the time