I've just found this indoor set at a great price with a 3 for 2 offer included.
Get ready to set a record and then beat your best with your own Nerfoop Basketball Set. Hang your backboard, hoop and net on a door or wall with the metal clip or door bracket, and then get your game on with the foam ball. It is built for instant action whether you're indoors or out and is available in orange or green.
This complete Nerfoop basketball system includes a backboard, net, hoop and metal clip to attach it to a wall or door.
Set up in seconds and play almost instantly.
Seems to have stock in all stores in my area, Swansea, I've just bagged 3 for under £16, average price of £16 plus postage for one set elsewhere.