I started* at £25NL with £50**, had to reload after 2 sessions, then got up to £260 before falling all the way back down to £7. Am now back at £330 and hopefully I won't be staring into the abyss again, but it does go to show what you can expect with variance.

*that is, I started playing ring games after a couple of months playing $5 SNGs

**though I was fully prepared to invest more if and when I needed to, so it wasn't a "true" bankroll