Joe Porper threaded ferrule ... where?

[WilleeCue]

Anyone know of a source of the Joe Porper threaded and capped ferrules?
They sold for $1 each and I see on ebay someone is selling them 5 for $17.

 

[cuetrip]

1-1/4" Porper Capped Ferrule – 14mm

1-1/4" overall length, 5/16" threaded interior. The Porper ferrule is an injection molded, blended polymer that is extremely durable. Machines well, glues well, and is easy to keep clean. Provides a medium hit.

www.muellers.com

 

[cuetrip]

1-1/4" Porper Capped Ferrule – 14mm

1-1/4" overall length, 5/16" threaded interior. The Porper ferrule is an injection molded, blended polymer that is extremely durable. Machines well, glues well, and is easy to keep clean. Provides a medium hit.

www.muellers.com

Oh, never mind. Didn't notice where it said they're out of stock.