Absolutely. It may cost about $15 for the upgrade, but any computer made from the last few years will be able to go up to Windows 8.
Bobby also just bought a "lifetime" subscription to Viper AntiVirus. Leo says that AVS companies are going lifetime subscriptions now to get the most money out of you since Windows 8 will ship with an AVS for free later this year, and most people won't buy a subscription ever again. But even so, $90 for three computers isn't too bad at all.