Just a quick note about these! I went to the £25 66 person Pre-release, an 17 person draft (my first ever) launch in which I only had to pay £10 entry to get the promo (which is pretty good) and then the £25 launch in Stafford where there were about 28 people.
I didn't do amazingly in any of them (in fact I did best in the draft, but still wasn't top half) but I did have a lot of fun and got some great cards. Thinking of scaling back for the next set - but I still got a booster box to crack. I am in possession of 67 unopened booster packs counting the 2012 ones we haven't played with yet!