10' X 10' Gazebo Style White Canopy $15 - Rite Aid B&M only, YMMV, 5/10 - 5/16
The picture attached is from the 5.10 to 5.16 Rite Aid thread . I'm on the East coast, so it's possible this offer isn't available in other parts of the country.
If you use the $5 off a $25 purchase coupon posted by chromie in the other gazebo thread you could get two gazebos for $25.
These Gazebos are not the pop-up type, but for $15 I'm willing to spend a little time putting it together for the 3 or 4 times I'll use it in a year.