For a decent shop to entirely port your intake, you'd be up for $800-1500. It's not uncommon to spend 30-40 hours fully porting an intake, hence why a lot of head porters just don't do it anymore.

I bought all the tools to do it myself. Buying all the burrs, sand rolls etc all adds up. I do an OK job, but I have seen some real home ported disasters as well.

How much are you looking to spend? As has already been mentioned, a different intake might be a better investment in some cases.