Other sites: Robin Janssens | Strawberry Forks
First of all i know agreat Behringer Stockist who will stock everything and if you email him at performancepart@tinyonline.co.uk and he will get back to you as soon as you can but make sure you make sure you tell him exactly what you want and leave your full name, address,post code, and telephone number(Telephone Number Opitonal) his prices are great trust me.
Next there is the awsome store Coda Music www.coda-music.com which stock everything at a dirt cheap price compaired to RRP of other stores i personally buy all my gear from there so check out the site.