Ron, it's $10 if you buy it alone. $50 gets 1 bobbin, 3 spools, 1 arbor for a savings of $5 if bought separately. I recommend a tyer who has none of these items to buy the kit and if he/she wants more bobbins to get them at $35 each. 3 spools are also $10.

Don't mean to turn this into a commercial.

Happy Trails!
Ronn