Yes, they are cross drilled and slotted, and just the fronts are around $800. Add another $350 for the pads. Not sure if MVP sells them, but you can call Nero at Titan or Advanced Racing at 281-955-0793.
The front rotors I referred to are the Brembo "Big Brake" kit. This kit includes Brembo calipers - and the rotors are a larger diameter than the factory size. The kit costs $2550 new. Replacement rotors are $800 and pads are $350.
I know that the same company that makes the Big Brake kit also makes replacement rotors in the stock Supra sizes for front and rear. I'm guessing that the EBay auction was for stock sized rotors. $350 for all four was a steal. My friend bought a set from SP Engineering and paid quite a bit more than that, and when I called Chris at SP a few months ago he said he can no longer get the rears.