For the video games, prices are in the toliet except for premium condition and highly desirable games. You can get more opinions on KLOV, but here's my thoughts...

>1977 Atari Dominosworkingnice original cabinet
Black & white raster games, even nice and working are a small market and a tough sell, and this game is not highly desirable. Based on your description, this is a $50-$100 game.

>1979 Atari Asteroids(not working)nice original cabinetno board damage that i could see
Desirable game, but very common. Most are beat, especially the control panel. Not working? On this game, that means the game board or monitor or both are dead, which are the most costly parts. Based on your description (giving credit for a nice control panel), this is a $50-$100 game as is.

>1980 Bally Space Encountersnot workingnice original cabinet
Not very common, but not highly desirable either. Will be difficult to find parts to fix it or find someone to repair it. Guessing $75.

>1981 Atari Centipede(works)cocktail tablenice original cabinet
Common game. Cocktail table video games are a small market and a tough sell. Even though the title is somewhat desirable, it doesn't go for that much in a cocktail, $150 (maybe $200 if you get lucky).

>1979 Bally Galaxian(works)nice original cabinet
Common game, doesn't sell for much. $150-$200

>1983 Bally Tapper(works)bud versioncould use a new overlaycabinet super nice
This is the best of the video games you have listed. Is the side art full color (doubtful)? If it is regular side art, depending if you get lucky or not, this could be anywhere from $500-1000. If it's one of the rare games with full color side art, could be up to $1500. The KLOV listing for the game shows both the full color side art and regular side art (although the regular side art picture is very hard to see. The first pic is the full color.
http://www.arcade-museum.com/game_detail.php?game_id=12839