I just purchased a thrity dollar quadcopter and I cannot wait for it to arrive.
I know this quadcopter has been around for awhile and is normaly $59.99 but Amazon has it for around 30 dollars. Many other cheap quadrotors use an IR controller, making it impossibe to fly the quad with the blinds up, however this one is in the 2.4GHz RF band.
According to my Amazon account it should arrive on Tuesday. I will write another post about how the quad flys and hopefully an detailed internal hardware teardown.
So come back in a week and I should have a more detailed post.
Update: It arrived today. I will have a new post up soon.