I was struggling to find the money for an xfer token on such short notice, but i decided against it.
I spoke with some people on LS, and they say that a lot of these Brit Games events don't have personal prizes. One guy said, "knowing our EM's, you will just be stealing regular items/tools." Also, there's the possibility of what was done at the GL Fel thief event a few weeks ago. We were stealing 10 stone grapes with a lifespan on them. Sure, those who got away with the grapes won an event item, but i'm not sure if that's gonna be the case for the Brit Games.
Another thing to factor in is all of the threads i have been reading about the items that are constantly being lost during shard transfers. I have too many rare items equipped/banked to risk for the slightest possibility of winning an event item. So, to those of you planning to xfer for this event, take all the risks/rewards into consideration before clicking that token.
Good luck to those attending.