Buy.com has lowered the price on the 320GB Western Digital My Passport External Hard Drive, now to just $82.24. Shipping is free and there is no sales tax (except CA, MA, MD, NY, TN). This model is compatible with either PC or Mac and substantially smaller than other drives with this capacity (it's just a bit bigger than an iPod). Compare this price to $140 at Radio Shack. Plus, if you checkout using Bill Me Later, you'll be eligible for an additional $15 discount.