I had a somewhat similar trajectory though I have focused on invented brandables. By the end of 2014 I had 150+ domains, by the end of 2015 I had 100 more, and by December 2016 I had 400 domains, all caught on the drop or using Pheenix. From 7/1/12 through 12/31/16 I grossed $19,779 and netted $13,864 after all expenses. My first four-digit sale was at BB in January 2014. In June 2017 I purchased Desktop Catcher and also last year purchased (and sold) a few domains here. I joined NamePros in October 2016 but really began paying attention to it in 2017, it's a wonder I didn't go bankrupt without all the insight here. I have 224 domains listed at BB and five in review (and sold 20 there all told); at BrandPa I have five listed, three underway and five in appraisal.