AstroMart
Everything for the astronomer including news, classifieds, auctions, articles, forums, and a calendar.

Canada Wide Astronomy Buy and Sell
Contains new and used telescopes and accessories.

Chicagoland Astro Ads
Provided as a free service to amateur astronomers in the greater Chicago, Illinois area to post astronomy related classified ads, and shop for used astronomy equipment.

Internet Telescope Exchange Classifieds
Listings of telescopes and accessories for sale or trade.

Astronomy Classifieds
ATM supplies, books and publications, cameras and imaging, electronics, employment, mounts, optics, and telescopes.

Astronomy Classified Ads
Accessories, cameras and photography, eyepieces, optics, telescope mounts, and telescopes and binoculars.

Astrofieds
Active and archived, message board, tutorial, and FAQ's.

ScopeTrader
Reflectors, refractors, mounts, cameras, scope building, eyepieces, and observatories.

Astronomy Mall
The sale of hobby related equipment and accessories listed for free.