$615 EUR isn't bad for middle of summer. It is only $1700 USD for us to get to Amsterdam. I know sometimes in Jan or Feb tix get down to around $300 USD.
What would any of us get? We could build exposure for the site - give you valuable feedback, and help plan for the future. This could also include how to get more online traffic though partner sites like we kind of started with our site Cadmonkey.com.
With your expertise you could run workshops in digital photography or even web design and programming. If you do this during the school year – you could charge workshop participants a fee and not only collect 100s of images, but possibly pay for your trip, the conference, and maybe more.
What would Studio2a want? Donno. Depends on our level of involvement.
PS – how did this page get indexed on Google less than 1 week after my post here?