I have to agree with most of the comments. $140 sounds really pricey for something that size.
Granted, I spent about $200 on each shoulder, but they cover my shoulders almost entirely. Plus, my designs were really intricate. AH is rather simple.
It's not badly done, but I will say that you'll probably kick yourself for getting it later.
Another thing I agree with is that you did pick a shitty place to get it. Forearms are not exactly the easiest place to cover without wearing a long-sleeve shirt, and, unfortunately, the stigma is alive and well in the business world.
As long as you're happy, that's all that matters, although HAYF did make some decent points.