I've never brought anything online....
Neither had I until 2 years ago. But now I do, I can't imagine going back to how things were. I have all the Trek novels (among many many other things) I wanted for years but weren't available locally. Most of the older books I got used, for the price of shipping only. I got several DVD sets far cheaper than in-store prices, and a few from eBay that were an absolute steal (like a mint condition complete 5-season set of Stargate Atlantis DVDs, for the price of a single season new in stores)
Setting up a Paypal account and associating a credit or debit card is easy, so is setting up an Amazon account. Take the plunge!