Can't find any info anywhere on "disc makers" ultra 8x dvd's

I’ve been searching everywhere, and I can’t find out anything about “disc makers” ultra 8x dvd’s. They came free with my Plextor PX-716a. I found the site to buy them from (very spendy), but I want to know if anyone has any idea what the actual media code might be ( I haven’t actually received them yet. Still in mail), and if any quality tests have been done.

OK. I got the media last night. It scans YudenT02. These are the 15 free inkjet printables that come with the PX-716a. Nice discs, but I won’t buy from “disc makers”. They charge over $1.00 each for these media.