What volume are you grinding with it ? (i.e. ballpark how many pounds per week)
I'm guessing that the $330 burrs are real titanium rather than a titanium alloy? The "duramill" burrs for the Mazzer Super Jolly are usually at most 2X the price of standard burrs. A 3.88X increase for titanium over standard seems high. The claim for the duramill burrs (which - to the best of my knowledge - has not yet been verified in any objective independent testing) is that they last 3X to 6X as long as the standard burrs. If the Anfim burrs are real titanium and offer a minimum of 5X t0 6X the lifespan then it makes sense.
New York Central Coffee Roasters