Hiho!
I've just tried to clean the storages of my bases and found 6000 Alien Materials. It takes a lot of time to sell this.
I propose to increase the rate at which Alien Material is sold from 1 to 10 or even to 100 per click. Since it is basically worthless (3 cr / unit) and you have lots of it (by dismantling ufos), there is no real need to sell this stuff carefully.
Andreas