If she has a Honda and it still had a tape deck I'd assume its an Accord or Civic and you shouldn't be looking at more than 100 for a decent cd player, no more than 70-100 bucks a pair for good speakers and no more than 30 bucks in parts to put the deck in. Last time I checked deck labor was roughly 45-55 bucks, speakers between 30-80 depending on what the car is. Everything on a Honda is a cake walk to install so expect no more than 2 hours tops for install time.