Who still makes a good quality six and seven speed freewheel of a reasonable yet sporty range - not a corncob, not a wide range, but something like 13-21, 13-23, 13-25, etc?

Maybe it is my imagination, but the supply of such freewheels on the used market seems thinner than it was just a couple years ago. Forget the $200 "NOS" freewheels that never sell. I'm talking lightly used "rider" condition freewheels for pretty inexpensive prices. Not as many as there once were.

Of course, new freewheels are dirt cheap - Sunrace for $18 etc - but they are mostly super wide range, 12-30 and so on. I'm seeing a Sunrace 7 speed 13-25 but nothing narrower range, and for 6 speed only 14-28 which is more for a touring or mountain bike than for a vintage racer.

Is anyone worried about freewheel supply in the future?