Spark Plug problems.. Need price quote ASAP!

[SpoolinWRX4]

Ok so I have a big problem. I was installing spark plugs (NGK 1-Step Colder Iridiums) on my '06 STi, and on my last one (passenger front), the plug snapped on me with one half in the head still and the other broke off. These are plugs from the factory, never replaced and the threading on the half that broke off is chewed up and stripped all over. I called Subaru and I don't have a warranty so everything's going to have to be on me.

I was installing these plugs with plans of bringing the car to you guys for a stage 2 tune. So I was wondering how much it would be, if I bought a head, to install it and possibly a tune afterwards if financially I can do it. Or is there anyway I can tap out the plug and rethread the hole or anything? But for the most part I would like to just get the new head on.

Please let me know ASAP of a price to do this. I've brought another car of mine to you guys twice, and I know your service is top notch so there's no other place I'd like to bring my car, Thanks!

[Precision Tuning]

Let me find out exactly and I will send you a pm.

Thanks,
nicole