Last week I had a terrific IK chest drop. I sold it on the AH for 450 million. My entire DH at the time was worth, at most, 80 million, for everything I'd ever done in D3. I refuse to admit that there was an immediate Dollar equivalent to the sale. So when I spent literally all of it over the next week decking out my new barb and tweaking my DH, I also refused to admit to myself that I'd just spent ~190 dollars on a video game character. Nope nope nope. Pixel currency made, pixel currency spent. The only time I will access the RMAH is if I undergo a major life change, give up gaming entirely, and decide to make some real-life profit out of my many hours clicking on monsters.
You guys do know that $135 is only 260mil'ish? Most people playing D3 still haven't switched their gears in their minds that their gold is actually cash.
As for the experiment, open bidding does not work as efficiently as AH because it's easy to privately contact the seller. It's not like in the real world, where open bidding happens then and there, and no going back on your offer.
edit: not that I'm saying it's worth 260mil. Crit damage is rather low, same with 6% attack speed, but the 10% cc kind of helps it a little.
And btw, next time OP, don't start the bid at such a low price. I'm pretty sure you that ammy will not sell for over 100mil at this rate, and I think it's worth over that price. The problem is there might be 10 people who want it, but 9 of them will take note of the time left and come back to snipe it. In that case the bid won't be raised (generally) until the last minute.