Yeah, come to think of it, I needed a rare-sized (25.6mm) seatpost with a zero-offset, micro-adjustable head.

I thought "Good luck finding that, it's an Austrian vintage bike size.", but a quick Googling session immediately produced a fine specimen, for only $20 (shipped) thru Amazon. Delivery was about 4 days.

A shim might cost half that much, but the correct-size post might ship out immediately with the wrong post collecting the charge-card credit later?

This silver, 2-bolt post was very light even at about 18" long! I cut 90 grams of length out of it: