Gotcha, I don't like this type of shopping myself although few online buys turned out to be annoying and what's worse is sending shit back and etc.
I always go the brand store I like to buy ( which is pretty much anything since I like most brands ).
Try some on, even if they don't have your size number you will get the general idea on how the shoes form around your feet if they are comfortable and shit. Then you can ask in the shop if they can order a bigger/smaller number and you should be happy.