I have about 4,800 in Lexis and 7,200 in Westlaw after one semester. At first, I had way more in Lexis but then somehow ended up with a bunch in Westlaw. It think it might have been the trivia game - at one point I got 1505 points for answering a trivia question.
I was thinking of getting the 15k point bicycle from Westlaw, but I can't tell if it is actually decent, or just crap. Probably crap, since if you go by the gift certificate values 15k points equals about $230. I was also thinking about getting a router from the new Amazon thing that Lexis has, and wiring my house this summer.