Just ran a quick search on settled bets for the last 30 days there were 1239 bets, across 368 Markets
So an average of 40 per day. I think the most on any one day was in the region of 100.
Net profit £273.89 for an ROI of 11%
Not bad for almost thought free betting.
Probably also worth noting that the biggest downswing was a loss of £280 across 30 markets, in the middle of August. So it can be fairly volatile.