For some of the smaller sizes, I may buy a pack 10 or 12 of the same size. For instance, 1/8" is a size that gets used a lot for pop rivets. If I break a drill, I just get another out of the package. Nothing worse than having to stop working to go buy a new drill bit. The smaller sizes are usually cheaper by the pack, compared to individually packaged.
One tip on sharpening drills, if the drill point is sharpened off center, it will probably drill oversize. So, if hole size is critical, you had better take extra care in sharpening the bit.
John
