Try buying a Kynoch 600NE I brought one @10 years ago and that cost me $90/AUD back then for a single, a Kynoch .33 BSA will set you back $80 if you can find one I managed to snag a unopened packet of 10 about 14 years ago.
I think they were only made from 1923-25 may be incorrect but it was not long anyway.