I also started with only 10SBD for bots and now I got about 30SBD every other day. It works, when you just use the bots with at least a positive ROI, which in the end (and when SBD prices are going down during the week until payout) will still make it slightly negative, but when prices go up during the week (which may actually happen someday 😉) your ROI will increase.
Of course it makes no sense to do this out of greed.
Thanks for your remarks, that I appreciate very much!