I love Radio controlled airplanes and have built several kinds from balsa to this large scale plastic one.
This one is made from $25.00 worth of plastic I bought locally at a sign company.
The plastic is Coroplast or corrugated plastic, its cheap and builds fast.
You could also use old election signs, you just need to paint them or make a patchwork airplane.
Total cost with radio and motor was around 350 bucks.
This is an extensive build and can be scaled down for a smaller plane if you wish.
A working knowledge of RC airplanes is recommended to build one of these.
Its also a tough model, it can take several crashes without too much problem.
I have built a couple of the Aircore
brand fold and glue airplanes and used them to learn how to fly, I strongly recommend starting out with one if you want to get into glow engine airplanes.
Balanced properly its a predictable airframe. Due to the simplified flat wing it will tip stall with you at low speeds, so learn how it stalls at high altitude before slowing down for your landing. The ailerons are large enough for a decent roll rate.
As with all gas powered airplanes please be careful wile starting it and have fun flying.