$4 is why ;)
after losing three e011s i'm left with three useless radios :D it's just over $4 for a set of 4 8520 motors on ebay, $8-odd for a fcb, and i've already got a bunch of likkle props, so i get a knock-around quad for $12-odd.
i'm not deconstructing the 110GT, these are little "cute"...