Arcopoles are meant as a UPS saver when operating on many surfaces, and they can't do that job effectively if you can't connect many surfaces with them because they are too expensive to create many of. This necessitates their lower price. By the time you reach them you have basically already won the game anyway. It's up to you to decide which uses of them are cheesy and which uses are fair.
I have been thinking about increasing their price to 2 or 3 arcospheres but undecided.