I did consider this option as well. In my last comp I failed 3 cube mbld, so it's not like I need 10 cubes right now. Also doubt I'll get to another comp until next fall. I could buy a GTS2M/month and most likely keep up with my mbld needs. And spending $19/month on a hobby is nothing really...At the end of the day I've found it hard to beat a GTS2M or magnetic Valk if money is no object.
Only problem with that plan is that eventually I would have a very expensive collection of mbld cubes, which inevitably will be outdated before too long. Had I went an idea like this a couple of years ago, I probably would have went with Tanglongs, which back then I thought was in a league of it's own. Today my Tanglongs just feel so old and slow, even compared to the budget cubes I just received.