I have invested $10000 and waited a year (invested in bitcoin) After a year I had $23,000. I removed it all from the rofx no problems and then invested $100,000. Its locked in until June, and then I'll do the same thing again, will try and remember to post again the results.
I started using rofx since July 2018 with the minimum of 1000 euro withdraw principal and gained part,with some difficulty due to my bank, but at the end rofx team helped me with what was necessary to recover the money. at the moment I invest in btc and 2000 euro that give something between 3-4% per month. the only and most important thing is the little transparency and mystery about founders and documentation of the company that makes me stop to invest more money. investing about 10,000 can get a return between 5-6%.