I ended up buying a used cubby off Ebay, then put it on 1.5 stilts, and built a deck around it.
Worked out way cheaper than buying a new kit, and came with a slide, rope ladder & firemans pole. Only thing was, we had to dismantle it ourselves.
It has been stained since the last photo, and is all the same colour as the cubby.
Daughter absolutely loves it, and we find ourselves up there every now & then looking out over the hills.