Groupon offers the Women's Seamless Capri Yoga Leggings 2-Pack in Black for $16.99 with free shipping. That's $8.50/pair and the lowest total price we could find for any two such yoga pants by a buck. (It's also tied with last week's mention of a single pair of yoga pants.) They're available in sizes S/M and M/L. Offer ends June 23.