Great idea, but sadly it wouldn't work very well. I just took a look at the
Bukobot airplane you pointed out and here's my thoughts;
1. air has a small amount of viscosity, so the Bukobot fly doesn't have to
have a perfect airfoil shape and it will still fly. Same goes for a paper
airplane. The Bukobot fly has a very rudimentary airfoil that is not a true
airfoil shape. It is just a cylinder laid flat with a plane behind it.
2. everything "flies". it is just a matter of power to weight ratio.
However, the Bukobot fly, if scaled up, due to lack of proper airfoil would
have a horrible glide ratio. That would mean that it would take way too
much power to be a simple and inexpensive rc plane. I could strap a rocket
to it and it would "fly" but "Buck Rogering" is not my engineering style. I
enjoy making stuff that is extremely simple, inexpensive, but can still do
the same job that a less elegantly engineered product could do.

Plan of action;
1. make airfoil
2. print it
3. test structural strength to failure
4. reprint it
5. wind tunnel test
6. repeat process as many times as necessary

This will probably take a whole year to complete....