It's taken me a bit longer than most but then again I am into everything they will let me stick my nose in...takes time away actually writing reviews. Still I tink it took aout the same amount of time to hit 100 as it did to hit 200, it really depends on your determination and the depth of your pocket book!
I am a sort of part time mentor in that I will open a class if asked but generally I want to give my students my full attention so I keep the classes very small. The mentor program is amazing but wasn't around when I started. I was mentored mostly by the kind and fairly gentle reviewers and staff.
What keeps me motivated is the great responses I get from my reviews...I like showing off and being the center of attention so this kind of feeds a need allowing me to step out of the spotlight in other areas of my life. It sort of balances me and makes me feel good.
If you have limited budget look for the great sales and when you get the chance for some free shipping take it! Sometimes saving up a bit longer to get to that free shipping is totally worth it.
Also get involved in everything...it can earn you great points and you'll meet some great people for when the funds are lean.
Like Sam I amalways open to questions from reviewers new and old! Just drop me a note and if I can help I will, though you will get the general hard sell for my Eden Lit Club in the bargain....