Every month the editors of Washington Consumers' Checkbook magazine report here some of the best prices they have found in surveying more than 300 area retailers.

The retailers have promised to hold these prices -- and offer rainchecks if supply runs out -- until Jan. 1, 1986. It is a good idea to call ahead to check that a product is in stock. Stores may limit purchases to one per customer.

Here's a partial listing of bargain prices based on Washington Consumers' Checkbook magazine survey. 19-INCH COLOR TELEVISIONS

*RCA 19-inch color television, model FLR465, quartz tuning, cable ready -- $300 at Alco Electronics Inc., Alexandria (780-5180).

*Sony 19-inch color television, model KV1972R, electronic tuning, cable ready, remote control -- $398 at Evans, Rockville (770-6400), Arlington (892-2800), Alexandria (256-6700), Fairfax (425-9000), Manassas (631-2333).

*Zenith 19-inch color television, model SB1977S, quartz tuning, cable ready, remote control -- $538 at Murrell's Television Inc. in the District (338-7730), and $539 at A&A Appliance Co. in the District (723-3315). ANSWERING MACHINES

*Record-A-Call answering machine, model 655, voice activated recording of incoming messages, variable outgoing messages, remote control -- $66 at Evans, Rockville (770-6400), Arlington (892-2800), Alexandria (256-6700), Fairfax (425-9000), Manassas (631-2333).

*Code-A-Phone answering machine, model 2150, voice activated recording of incoming messages, variable outgoing messages, with phone, remote control -- $140 at Telephone Warehouse in the District (333-2600).

*Code-A-Phone answering machine, model 2570, voice activated recording of incoming messages, variable outgoing messages, remote control, with phone -- DBL cassette -- $180 at Public phone stores, call for the location nearest you, Washington and Maryland (596-1122), Virginia (800-255-2257). STEREO RECEIVERS

*Sony stereo receiver, model STRVX460, 45 watts per channel, digital tuning, .008 percent distortion -- $240 at Audio Buys, Bailey's Crossroads (578-3033).

*Yamaha stereo receiver, model R7, 65 watts per channel, digital tuning, .015 percent distortion -- $446 at Audio Associates, Laurel (953-7242), Langley Park (434-4740), Arlington (525-1889), Bethesda (530-6003), Springfield (971-1060). SNOW THROWERS

*John Deere snow thrower, model 322, 3 horsepower, 20-inch cutting width -- $410 at Arrington's Mower & Equipment Center, Vienna (938-7231).

*Toro 12-inch Power Shovel, electric shovel, 12-inch cutting width -- $100 at Lanham Bicycle & Turf, Lanham (577-9763).

*Toro snow thrower, model S-620, 3.5 horsepower, 20-inch cutting width -- $360 at Lanham Bicycle & Turf, Lanham (577-9763). DISHWASHERS

*General Electric dishwasher, model GSC702, pot scrubbing cycle, energy saving dry cycle -- $396 at Graeves Tire & Appliance, Wheaton (949-0211).

*Kitchenaid dishwasher, model KDI21-Imperial, pot scrubbing cycle, energy saving dry cycle -- $439 at J.R. Enright Co., Chevy Chase (654-1700).

*Maytag dishwasher, model WU202, pot scrubbing cycle, energy saving dry cycle -- $403 at Buls Maytag Home Appliance Centers, Rockville (231-0844), Silver Spring (589-3363), Vienna (281-4890), Springfield (644-2977), Alexandria (765-2206). ROWING MACHINE

*Precor rowing machine, model 612 -- $249 at College Park Cycles, College Park (864-2211). EXERCISE BICYCLES

*Monarch exercise bicycle, model MARK II 865 -- $366 at American Physical Fitness, Rockville (340-0001).

*Schwinn exercise bicycle, model Air-Dyne -- $595 at The Bicycle Exchange, Arlington (522-1110), Fairfax (323-0500), Alexandria (768-3444). TENNIS RACKETS

*Prince Pro 90 tennis racket, midsize, aluminum composition, unstrung -- $69 at The Sporting Edge, Potomac (299-4141).

*Dunlop Blackmax Comp. tennis racket, midsize, composite, unstrung -- $90 at Racquet & Jog, Bethesda (986-0558), and 2 locations in the District (333-8113).

If you feel a retailer has not met its commitments, Checkbook's editors would like to know. Write: Checkbook, 806 15th St. NW, Washington, D.C. 20005.

1985, Center for the Study of Services