Amazon offers Prime members the Step2 Shootin' Hoops Junior Basketball Set for $29.88 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, shipping adds $8.91.) That's the lowest total price we could find by $8, outside the offer below. It features a 30" to 48" adjustable height, woven net, and drink holders; the base will need to be filled with sand or water.
A close price: Target offers it for $30.49 with free shipping.