Now that I'm home, and not on my mobile, I searched around, and my apologies, BNR does not seem to have the Trifecta Budget Tune for the Sonic on their site anymore. I found an expired link to it in Google, so I can see it was $200 instead of the $315 full tune price you linked to.
However, in addition to the $200 tune, you would have had to purchase a $100+ red cable, making that a $300 purchase, I guess they figure since (for the first twenty buyers this weekend) the red cable is free, you wouldn't want to get the budget one?