944 oil cooler how much

The cooler is probably OK.never seen a bad one yet...the seals/o-rings in the housing are old and leaking oil into the coolant.and coolant into the oil.....non turbo...$350...turbo $..450-500 parts and labor plus flushing cooling system with WISK detergent...yeah that's right.. WISK it works well and NO foaming...Porsche rec. this method..