Boxador's current portfolio size: 2206
https://www.brandbucket.com/profile/boxador
As the other (and original) BrandBucket "insider", my measly sale rate percentage shows two things:
1) Staying on top of your portfolio makes a world of difference -- I haven't added anything in almost a year, and I renew everything and don't prune/refine my inventory;
2) Michael Krell is really, REALLY good at what he does, which is why I love having him on board, and why it's especially cool that he is so open and sharing about how he works (just read his posts here, listen to his DomainSherpa interview, and read his blogs.)