The Sears 12 pc. Micro Tech Expert Screwdriver set, cat no. 941670 is a great deal. It has Torx sizes T6,7,8 and 9. In addition, it has small slotted and Phillips drivers as well. The slotted ones are great for eyeglasses and the Phillips work wonderfully on Photon lights. As I recall, it was about $15. For larger Torx sizes, Sears sells a set of four Torx drivers in standard screwdriver hex configuration. You get T10, 15, 20 and 25. Cost of these bits is about $3. Cat. no. 941402.
Walt