Oh you're 100% correct. Those developers work their butts off. I'm just starting off as a freelancer and kinda broke at the moment. But working on about 10 website portfolio pieces, some for actual businesses, and that feature is so cool and would be a great feature to show.
I've already done a little research, and although I probably won't bite the bullet just yet, I probably will when my next gig comes through.
Sometimes I do find work arounds, but this one I think was too good to be true for free, and understandably so. I've definitely paid for a lot of themes and extensions that have been well worth it, but can't afford everything at the moment. Hope to give back for the freebies when I can and more in the future.