Sounds VERY niche to me, not sure authors would take the time to create one especially for such a limited audience.
how much would it cost for someone to build that for me?
Depends on the designer/agency, their pricing, quality of work etc.
I would expect about €1,000 minimum for that type of design.
The amount of time I have spent supporting IE6 over the years is ridiculous, this in my opinion is absolutely fine. It is giving the user a browser with better security and will render the pages correctly, who cares how you make them change, it’s for the greater good 
I’m quite unhappy that Envato did this, It is hard to know what I would have done if Ellis Labs sent me a letter, but that theme is in no way copied from the Expression engine site, similar yes, but hey, almost everything in web design is inspired by someone else’s work.
Freelance Web Designer/Developer and loving it! 
Hi guys,
I have 3 themes designed and ready to turn into Wordpress themes for sale here whenever I have some free time 
Anywho, I have been thinking about creating a custom admin page to help the buyers with options to change the logo, add specific content etc etc, does anybody have any info as to how I can create these “options pages”?
Cheers 
Woot! Nice one mate, well done
Edit, have to start reading more replies, congrats about getting the situation sorted
My advice for what it’s worth:
Do not try and slander his name via twitter, his blog etc. This makes yourself look unprofessional and does nobody any good. I know your angry, I would be too, you just need to compose yourself and try to get in contact with him again, you never know he could be extremely busy.
Shoot him another email and state that if you don’t hear back from him within one week you will be going to the small claims court.
Good luck
