Below are lists of boats currently for sale on Craigslist.  In addition USODA has a classifieds section where you can find used Optis and gear

Optimist

• ALWAY MISS IN GETTING IN ON THE GROUND FLOOR? ___OPEN SPOTS___ roseburg/jackson (Rhode island) $1
• NEW MANUFACTURERS PRODUCT ___OPEN SPOTS___ clovis / portales/syracuse/northwest (Rhode island) $1

420’s

Lasers

• LASER FUNBOAT (WARWICK) $2000
• Holby Pilot Sailing Dingy for sail or trade (Ashaway) $1000
• LASER FUNBOAT (WARWICK RI) $2000
• LASER FUNBOAT (WARWICK) $2000
• LASER SAIL BOAT (SOUTH BURLINGTON, VERMONT.) $6000
• Laser 2 Sailboat - Class legal, race ready w/ spinnaker and trapeze (South Kingstown) $2400
• Laser daggerboard with bag (Lincoln) $150
• Invitation by Bombadier (Warwick) $1000
• BRAND NEW 2008 Laser Performance Bahia (NJ) $9250
• Brand New Laser Radial Sail For Sale (New England) $350
• laser sailboat (Tiverton RI) $1800
• Full Rig for Laser (Narragansett) $500
• laser for sale; used minimally (Newport, RI) $3600
• Laser Dinghy (Newport ) $4400
• Laser Standard Sail - Unused (Newport RI) $325