Just checked the
HTTP://WWW.RC-BEARINGS.COM site. They list ceramic sets for lower prices than Boca's for ordinary high speed bearings. As an example, the Saito FA-120S from Boca, high speed/high heat, is $40.95 with free shipping. The ceramic from RC-Brgs is $28.97, says taxes and shipping will be figured "At checkout."
Just for comparison, the same set of ceramics from Boca is $80.95, still including the shipping charges, though.
I'm going to try RC-BRGS for the next set I need.
Bill.