Target offers the Pillowfort Kids' Teepee in Backyard Icons Green for $20. Coupon code "DEAL" drops it to $17. Choose in-store pickup to dodge the $5.99 shipping fee. That's $18 off list and the lowest price we could find. It features a fiberglass frame and measures 52" x 52" x 60".

Update: It's now available for in-store pickup only.