RCMoment offers the C-17 2.4GHz 2-Channel Remote Control Airplane for $25.10. Coupon code "DEAL8422" cuts that to $23. With free shipping, that's the lowest price we could find by $2. It features a 15" wingspan, 6-minute flight time, and gyro stabilization.
Note: It ships from China and may take up to four weeks to arrive.
You have heard plenty about the downsides of ADHD. But have you heard of the many unique gifts that accompany this brain difference?