Someone found the Eddy for about $120 or so...look on Treebuzz to find the thread.

The Eddy is about the same size as the Grigri. If you're using the lever to rappel it isn't as touchy as the I'd under low loads.

Just the reduction in size compared to the I'd is reasonn enough to use the Eddy.

If you are considering a purchase, get the Eddy. Everyone who has climbed on mine and is familiar with the I'd/Grigri agree.

Keep working on perfecting the SRT in the tree. You'll find that it is much easier than trad climbing.