tis still worth having a go a building ur own for ten bucks and about half an hours work. If u've got any kinda degree scale on ur tripod u should be able to move 120 degrees. I built one and am tre tre pleased with the results. Just make sure that u stick a waterscale on it to ensure that u're level at all times and it'll work a treat. Check out the easy build guide in these forum. I'm sure that Kaiden kit is cool... but heh why wait for the next Month or two for it to turn up when u could be out there doing it?
If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.