- Astronomy Pinboard
- Displays lists of astronomical equipment, application programs, literature, observatories and other related items available for lease or purchase.
- Astronomy-Mall
- Displays a plethora of links to pages that advertise tools, accessories, charts and other related items for sale.
- Canada-wide Astronomy Buy and Sell
- Presents a venue where sellers and buyers can place and renew advertisements of items for sale. Also includes FAQs, terms of use, and ad archives.
- Chicagoland Astro-Ads
- Displays classified ads of astronomical instruments, used equipment, and publications. Shows the requirements for posting advertisements.
- Cloudy Nights Telescope Reviews
- Shows listings of used telescopes, accessories, and observatories for sale. Also contains equipment reviews, discussion forums and related articles.
- Scope Trader
- Features an itemization of astronomical tools, accessories and observatories that are available for purchase. Also contains news, articles, reviews and forums.
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