Edelbrock RPM head owners unite!

How does the price compare for the fully ported Edelbrock heads vs. the OOTB Trick Flows? When I looked at it the Trick Flow heads were roughly $500 to $1000 cheaper a pair than buying the Edelbrock heads and sending them out for porting. But I didn't do a ton of price shopping, just compared some numbers I had. The last set of Edelbrock heads which I used cost me $3500 by the time I had them ported and had roller cam springs installed. The Trick Flow heads are $2000 out of the box and come with a pretty good solid roller spring.