all you need for a cheap tree is just the plates, then buy piping and a piece of angle iron to hold them, cut n weld in place, compete with your buddies. in the states you can get the dueling tree plates for 15-20 bucks each spo cost of a full setup would be 100$ or so
I don't know a single person outside of work that welds, so something like that wouldn't really work for me and I'm sure I'm not the only one.