This highly-reviewed City Pickers 24.5" x 20.5" Raised Garden Bed with Watering System is $29.97 at HomeDepot.com. This is the best price we found by $7, and before it sold out, the same one was $46 on Amazon. It's set on casters, will automatically water plants, and has an aeration screen and mulch cover. Shipping is $5 or order for free pickup at your local store. Sales tax is charged in most states.