Have a Braun Multimix. After moving several times, we lost the beaters (they call them whisks). I've done several searches over a year looking specifically for the whisks but came up empty.
Resigned to the fact that I wasn't going to find the replacemant parts, tonight I decided to check prices on a new Multimix. One of the first sites I came to carried - you guessed it - the whisks. Fifteen bucks including shipping. Beats the $45 plus shipping for a whole new unit.