Found a used 360 copy of DJ Hero for $59.99 today out in Wood Village, OR.

Did a trade-in (all base pre-MVP/Promo):

Borderlands - $25
Killzone 2 - $15
Eternal Sonata (360) - $7.75
50 Cent (ps3) - $4.50
Banjo-Kazooie: N&B - $6
GH World Tour - $4.50

After 40% bump + MVP was $94.13