Now at Gilt City, a voucher for 30 days of unlimited yoga at CorePower Yoga drops from $200 to $75. CorePower Yoga has over 160 studios in 20 states, and offers classes for beginning and advanced yogis. Your first class must be completed by May 15, 2017, and classes expire 30 days from initiation. This offer is valid for new members and members who haven't been in since May 13, 2016. Limit one voucher per member; four additional may be purchased as gifts.