Well I probably won't be doing this any time soon since I just got the APR stage 1 (along with an APR intercooler and APR intake) just 3 weeks ago. Anyways here's the price breakdown of getting the APR stage 3 in Germany from APR Germany. I'm guessing this is a tad more that any of you in the USA with stage 3 have paid, but TIG (This is Germany) and this is about the best prices I can find on this side of the pond. I don't have to pay the 19% taxes so here's the cost breakdown for APR stage...
APR (Germany) stage 3 cost
APR (Germany) stage 3 cost