Huh, I didn't know CGC started slabbing progs. When did that happen?
I can't read the label -- does it note if the free stickers are present or missing? Raw copies with stickers go for more, which is obvious, I guess.
I had the impression for a long time that British collectors of British comics weren't as invested in the whole "first appearance" mentality that's become so popular in the past 30 years or so in America. I could be wrong, though.
2000 AD has so many great characters, it would probably give Spider-Man, Batman and the Fantastic Four a run for their money on key books.