Where to buy body torx screws?

Anyone know where you can buy the torx screws that you use to hold on the body work? I lost one that holds the rear plastic on. On eBay it's $5.90 for one screw? its a 1/4 x 20 x 1.5". Just wondering if anyone else had a similar problem and found other screws that were the same size, but not as costly.

Thanks!