All of my Torx sets came from Harbor Freight. They all work fine, and I have never broken one. You need two sets. One that goes from T20 to T55, and a second set made as bits for a screwdriver from T2-T30.
I MIGHT have $20 in my Torx sets.
Oh, and HF has the E-Torx as well, needed for the bash plate, handlebars and shifter.