Cheap Aerial Photography Drone
After my own searching/researching, I think "cheap aerial photography drone" is either an oxymoron or a contradiction!
If you use the GoPro as a camera, you're almost forced to also use a gimbal mount. Otherwise, virtually every little twitch of your drone (turning, stopping, starting, the flight board reacting to a puff of wind, etc.) will create the infamous "jello" effect.
My personal experience is that the GoPro (without a gimbal) will work fairly well in almost calm conditions and very slooooooow movements.
My opinion (and I'm a hobbyist, not a professional) is that you essentially *must* have a gimbal mounted camera. The weight of the camera, the gimbal and a battery system large enough to provide reasonable flight time all conspire to require a reasonably large frame - relatively speaking.
What's that old joke that applies to so many areas - small, cheap and efficient - choose any two!
Good luck. Seriously.
Art - N4PJ
Leesburg, FL