naturally singer recommends buying only singer brand bobbins. :lol:
this seems to be a pretty good price for the brand name 15Js
http://www.sewingmachinesplus.com/85128-50pk.php
unless you buy hundreds at a time, you aren't likely to find them for much less.
i saw a 3-pack of 15Js for $4.77 plus shipping. as
if! :lol: :lol: :lol: