Every month the editors of Washington Consumers' Checkbook report some of the best prices they have found in surveying more than 400 area retailers.

The retailers have promised to hold these prices -- and offer rain checks if supply runs out -- until Dec. 31. A partial listing of bargain prices:

Microwave Ovens

General Electric JEM20H: Mid-size with .8 cubic feet capacity, 600 watts cooking power and electronic controls; optional hardware for under-cabinet installation -- $159 at Sterling Appliance in Sterling (703-450-5453).

Magic Chef M15-10P: Mid-size with .8 cubic feet capacity, 600 watts cooking power, recessed turntable and electronic controls -- $169 at Alco TV & Appliance in Alexandria (703-780-5180) and Fredericksburg (1-703-373-1797).

General Electric JEM31J: Mid-size with .9 cubic feet capacity, 700 watts cooking power, shelf and electronic controls -- $199 at J.R. Enright Co. in Chevy Chase (301-654-1700).

Tappan 56-4994: Full-size with 1.3 cubic feet capacity, 700 watts cooking power, 1000-watt browing element and electronic controls -- $255 at Metropolitan Appliance in Bladensburg (301-927-2838).

Amana MVH200: Full-size over-the-range combination microwave/hood with 1.0 cubic feet capacity, 625 watts cooking power and electronic controls -- $409 at all Reliable Home Appliance locations.

CD Players & Changers

Sony CDP-291: Single CD player with 20-track programmability and shuffle play -- $119 at Graffiti Audio-Video in D.C. (202-296-8412 & 202-244-9643).

Sansui CD-M12: Remote-control CD changer with two 6-disc cartridges, 30-track programmability and random play -- $269 at Washington Music Center in Wheaton (301-946-8808).

Denon DCM-444: Remote-control CD changer with 6-disc cartridge, 32-track programmability and random play -- $367 at Audio International in D.C. (202-333-3511).

Yamaha CDC-705: Remote-control CD changer with 5-disc carousel, 40-track programmability and random play -- $369 at Artistic Audio in Warrenton (703-349-3255).

Sony CDP-C85ES: Remote-control CD changer with 5-disc carousel, 32-track programmability and random play -- $475 at Audio Buys in Bailey's Crossroads (703-578-3033), Gaithersburg (301-840-9180) and Manassas (703-968-7513).

Cordless Phones

AT&T 4200: Single-channel with redial -- $55 at all Evans locations (301-770-6400).

AT&T 5200: Two channels with redial -- $100 at all W. Bell locations (301-881-2000).

Panasonic KX-T3730: 10 auto-scan channels, two-way page/intercom, speakerphone, 10-number memory and redial -- $119 at Telephone Warehouse in D.C. (202-333-2900) and Alexandria (703-548-2998).

Northwestern Bell Excursion 3620S: 10 auto-scan channels, two-way page/intercom, speakerphone with second keypad on base, 20-number memory and redial -- $120 at American Phone Shops in Crystal City (703-979-9175).

Southwestern Bell FF-1750: 10 selectable channels, two-way page/intercom, speakerphone with second keypad on base, 9-number memory and redial -- $149 at all Public Phone Center locations (301-381-3600).

35mm Compact Cameras

Minolta Freedom 50: Focus-free with auto-load & auto-advance -- $50 at all Best Products locations.

Olympus Infinity Twin: Weatherproof with dual 35mm and 70mm auto-focus lens and fully automatic operation -- $149 at Penn Camera in D.C. (202-347-5777).

Konica A-4: 35mm auto-focus lens with close-up feature and fully automatic operation -- $160 at PhotoPro in Kensington (301-933-3350).

Ricoh Shotmaster Zoom 70: Continuous 35-70mm auto-focus zoom lens with fully automatic operation -- $175 at Irving Camera in D.C. (202-452-8000).

Minolta Freedom Zoom 105i: Continuous 35-105mm auto-focus zoom lens with fully automatic operations -- $268 at all Evans locations.

If you feel a retailer has not met its commitments, or if you would like to know more about Checkbook magazine's Bargains survey, call 202-347-7283.