I'll check the prices again on Xometry and post the latest prices and shipping cost here. Might make sense to do a group buy, and I'd be on board to...
It might be cheaper for you to just order a set directly from Xometry. They had the best prices back when I ordered last year. I don't have my own 3D...
Peter, I like that they will tune your ECU then if you are still not satisfied, you can work things out with them to better tweak the tune to better...