Cheapest place for Pokemon TCG cards?


My daughter has started playing and is bugging me for new starter decks and boosters all the time. Don't really care about first edition and holo cards, these are strictly for play. Any trusted sellers or awesome deals about?
How much are you looking to spend?I've got a shoebox full of cards that I've been looking to get rid of, but I've been sort of holding out for the right price.
bread's done