If you escrow the whole amount (35 BTC) I will sure start developing this. I'll keep an eye on the thread.
If the right developer comes along and wants to use escrow and I can find a trusted service then yes, looking at those profiles the amounts are significantly smaller than this, or the alternative is that I'm happy with is to break the job down into milestones you can develop it on your own server so I cannot access or steal the source code, and as you complete each milestone I will send payments as we go.
The problem is that your first posts here offer 35 BTC but require work without any assurance of pay. No one is going to start writing code for you without being sure he will get paid for his work in the end. Not quality code, at least. Of course, you will find kids willing to steal nulled themes from the Internet and install a eCommerce platform just to try their luck, but a experienced developer won't move a finger. Good luck with your project.
I agree to you to a certain degree. With developers I worked with person to person they usually bill after the work is done. I'm happy to use escrow I have not brushed it off. I need this work done to a high standard if the worst comes to the worst I will exchange the BTC and put an advert on Freelancer.
Again if it's unreasonable to do milestone payments as we go along, it minimizes risk completely at once the developer sees I'm not some sort of mug and actually pay each and every time there shouldn't be a problem.
That or milestones via escrow? That would minimize my exposure to being ripped by an escrow provider and if you gentleman are saying no developer would do it without escrow then that is perhaps the solution.