This is how (I spotted it yesterday while browsing the ThemeHybrid site):
October 14th, 2008 WordPress
Club memberships at Theme Hybrid for $10
And I can tell you – it is a bargain! Great offer – just check yourself! According to me, the membership is worth more and I was thinking of becoming a member for quite some time. The only reason I did not join Theme Club on Hybrid site earlier is that I was not convinced if I will blog here for a longer time (amount of time and effort needed for it – do I have it? or rather – will I have it still?). But Justin Tadlock’ s offer was too good to resist. This offer + my “aforementioned catastrophe” = new Theme Club member.
Check yourself – among other things you will be able to acquire this Child Theme:
I just downloaded it yesterday – and I have to tell you – it is beautiful. I just have to change the header (read it: spend some time playing in Gimp) – and you will see it here, on my site. 
But it’s not only about what you can “get” for your money – it is mainly about supportng good cause. If you want Justin (and also other WordPress designers) to create those pieces of art – well, I think you should join their clubs. At least this is my meaning. And this is how Open Source works…
Psychologist,consultant, teacher, Kamil's mother, Aicani's wife, Linux user, amateur-photographer, fan of squirrels... ;)
Justin Tadlock is a talented WP man. I really like his ideas. Thanks for sharing this.
Thank you for stepping by and taking time for commenting.
Thanks for joining the club.
For me, it’s never been about the money, but I also had to find a balance between theming and my regular life. So, putting a small price tag on things lets me get more work done and give back to the community. Plus, having a large community, helps keep things cheap.
I’m glad you decided to join. And, the theme looks good on your site (if you’ll allow me to boast a little).
Hi Justin – and first of all – thank you for your comment – I feel really honoured!
So, it is me to say “thank you” to you.
And, yes – the theme looks splendid – even my son (21-year old web developer – sic!) is speechless and does not advice me to change anything this time…
As to money – do not feel bad that you charge for your work. For the first – price is really very small (it was affordable even before you introduced this amazing offer), for the second – as far as I understand Open Source – it is totally OK to charge for software and service (take a look at Red Hat and Mandriva, for example) as long as you keep the code available to the public – and you do it! People like me, who do not have knowledge to write the code themselves, have to pay for it. Come on – I am the teacher – I want bread for my teaching service, too
I hope that your community – or may I say ours…? – will grow and I hope that you will keep on creating those coding masterpieces. Best luck from a long-time Linux and Open Source user!