Finether via Amazon offers its Finether 4-Foot Mylar Hydroponic Grow Tent for $89.99. Coupon code "V3I6GSG6" cuts that to $36. With free shipping, that's $54 off list and the lowest price we could find. This completely enclosed system allows you to raise plants indoors or in small areas during colder weather. It measures about 47" x 47" x 79". Deal ends May 20.