Just looked it up; looks like a lot of fun! Any particular reason why you don't bring your own bike with you? Cost to fly International with a bike generally runs $200 each way. I admit it could be fun though to buy something there, making the event kind of self-contained, but you'd still be stuck with either trying to sell it before your return or bring it back with you.

I'm not a fan of sporting-goods stores selling bikes (I own a local bike shop in the SF Bay Area), but Decathlon Sports does quite a good business with bikes and you could research their offerings ahead of time so you wouldn't have to worry so much about language issues.