That reminds me, I was checking out my local Tandy Leather the other day, and saw a set of needles (also available online here) for $4.50. However, there's also a set of needles available here for just $0.85.
Assuming the quality is the same, if others in this thread are looking to try with leather and follow your excellent work, these needles are significantly cheaper. I'll try to remember to post pictures and impressions when mine arrive.