Go to TOGA events ( TreadleOn Gathering and Academy) around the country. Some are yahoo groups and others also FB also. List can be found on TradleOn.net. Pre-list with photos, so you only bring pre-sold items and a few not yet sold. Be willing to accept checks at gatherings. Can include electrics, but treadles and handcranks sell most.
Treadles & Handcranks can also be listed on Treadleon.net in the for sale section.