[Aaed Musa] has built a variety of robots over the years ... The actuator weighs in at a total of 935 grams. It’s not cheap, with the bill of materials totaling just under $250.

At least, that’s what [John Choi] has found by building a completely DIY general purpose robot for around $2000. OK, so $2000 isn’t exactly “cheap” but considering that something ...