This deal has ended.
Cut an additional $4 from last month's post, Buy.com now has their Kingston 4GB DataTraveler on sale for $29.95. If you sign up for Google checkout, you can take an additional $10 off the price, giving you four gigs for $19.95. Compare that to $54 after tax at Circuit City. Shipping is free and there is no sales tax (except CA, MA, MD, TN).