I forgot what I told Jesus about the group buy price, but it should be quite a bit less than $300 for a set of seats. With that in mind, compared to Sparco, Recaro and such...we try to get the beefiest frame possible from the factory as well as obtaining pretty solid cloth materials, but since you aren't paying upwards of $600 a seat it definitely won't be totally on par. We do try our best to maintain quality since racing seats are our bread and butter. Honestly most of the other "replica" type seat companies have HUNDREDS of product lines so they could really care less if their seats are complete shit. I would know, I worked for one of these types of companies for around 4 years (70+ employee auto accessories company).
Check out our forum for more details on the sensors. As I write this, I'm think I'll make a mock-up bracket myself with basic tube frames and metal plates just to see if it can be done and possibly throw it into Daniels car to test. If that works I could have the option of sending the whole thing overseas to produce for a lower cost. I'll be sure to pick the best material possible if I send it overseas since I do not want liability issues. Many options to pursue, hopefully I can get this damn thing done in under a month...at least for the final mock-up.
Edit: Forgot to mention, we will be getting "Type 2" versions of some of our seats that will be built a bit more for racing in mind. The main difference is that the "Type 2" will have twist adjustment on both sides vs the single quick release reclining mechanism. Not to say that the quick release is bad, but for really heavy road racing we will be offering the "Type 2" for slightly more.