So many things are really cool about this @carlgnash!
Not only that you created something awesome, got something for your collection... but also this was real commerce happening in the Steem community... something being traded without the use of fiat money! We need more examples like this to bring Steem to the greater world!
And then, of course, how awesome to have something like a Lego community here! Something the world can relate to... forget "join Steem" for a bit, and instead consider "join our Lego community!" That's a MUCH easier "sell" in the real world.
Awesomeness all around!
=^..^=
Yes, I totally agree on all fronts! Onboarding people into communities where the focus isn't "this is a blogging platform where you can make money" but is instead "this is a community for posting about this thing we are all interested in" is a much better model for user retention on Steem.