It only lasts until 1PM PST today, but Sabatino Tartufi is having 50% off on white truffles. It will still be expensive and shipping costs suck, but it does a bit of the bite out.
The code is: FIFTYOFF.
Edit: I actually tried the code for black truffles too and it worked, even though the site says it is for white truffles. 2 oz. of black truffles with truffle shaver costs about $50. Shipping (for example to MN) costs $32 for 2nd day.