Hi mate, I'm Spiro Kovac, developer from Croatia and I would like to work for you at this project. Well I'm doing it for a living and I just checked your active air website, dunno it looks quite simple still those menus should be quite tricky to get working on mobile version.
Anyway I can get it done for the price of 370$ witch is as you said price for both, checking / updating desktop code and mobile version of the website.
Kind Regards, Spiro Kovac.