Hi!

"If your income allows", is correct.

With regards to aviation, most people in the world, and even the US, do not have enough income to enjoy aviation.

Even the majority of people worldwide do not have enough income to even enjoy a simulation of flying, either through their computer or through a TV videogame. I would guess that most Americans could afford some kind of simulated flying. We are quite lucky, here in the US.

cliff
NBO