I went ahead and just ordered a custom stick from one of the many fantastic builders here. It will run you easily 100$ LESS than what you are willing to pay for the TE, with possibly even more features than the TE. The only downside is you have to wait longer, so I guess you are still back at your dilemma of whether you should shell out the cash for it now or wait. From what I have heard and read, MC will be producing as many TE/SE sticks as there is a demand for them, so I find it highly unlikely that you will not be able to find one for normal retail within a couple of months. I chose to buy a custom because I figured that I wouldn’t be able to get a TE stick for 150$ before the custom stick would be completed anyways, and there are some advantages to custom sticks.
But all things considered, if you must get your hands on a TE now, and are comfortable spending the money, then you should go ahead and get it now, realizing that you may very well find it cheaper elsewhere in the future.
But like I said, I chose to go the custom stick route, and you may be happy doing that as well. It is at least worth a look.
Good luck with whatever you choose, and I hope you found my suggestions helpful.