not sure on how much they would charge. You have to drain the system unbolt the fans, core support and it should come right out.

 

1990 ACURA INTEGRA LS
My tempertaure meter is almost at the red zone when i drive-pretty much when i do 50 miles or more but when i apply the brakes like at a red light it goes towards cool, i looked and im not loosing any antifreeze what could this be?