Maria Camacho's sweet practice spot The Little Yoga Studio at 8th and Beech downtown (corner of Cortez Hill) is updating their class pricing and today is the last day to pick up a package at the "old" rates of $15 for drop-in (and better rates for packages). The new rates increase drop-ins by a dollar. Check their website for more info.
They also have an auto-pay promo that gives you unlimited yoga for two months at $85/month (AWESOME DEAL) (requires 4 month commitment).
Also, though I am thoroughly committed to the YogaWell.com teacher training program, TLYS does have it's own YTT intenstive. Check their website for info.