I shipped a full 2000AD and Megazine (& peripherals) collection to the US about a decade ago, and it's not trivial. Lots of weighing, special packing crates, lots of time, lots of money. Definitely non-trivial.
If 2000AD would digitize their back catalog, I'd be sorely tempted to replace the paper with bytes. The byte is light.
I might be selling them in about 30 years (because of impending death), but don't hold your breath.