4 x Alpha 480 (1020kv) Brushless Motors from NitroPlanes
4 x 30A Electronic Brushless ESC Speed Controller [Volcano Series] from NitroPlanes
2 x 11.1V 2200mAh 20C 3 Cell High Performance Lithium Polymer Battery from NitroPlanes
2 x APC 10x4.7 SFP Slow Flyer Counter Rotating Prop Pair from Dragonfly
1 x Carbon fiber tube frame (0.75" ID x 0.825" OD x 60") from Carbon Fiber Tube Shop
3/4" PVC Irrigation fittings
Comments
I haven't added up the cost of the parts, it's not unreasonable as I am using relatively low cost ESCs and brushless motors. NitroPlanes is a good source for these. In any case, it's an experimental platform for software development, so cost has not been a primary consideration so far.