"The digital game that's almost like Pong. It's player against player when you BLIP it with a friend. Or player against machine if you dare to play against BLIP itself. Just automatically activate power source by winding BLIP's timing mechanism, it gives you hours of futuristic fun. Push the serve button and try to return by pressing one of the numbered BLIP buttons. But your hand must be quicker than the BLIP to send the light-emitting diode ball back to where it came from. Automatic digital scoreboard keeps track of who's winning. It's an all-family game of 21st century fun in a flash for ages 6 and up. Requires 2 AA batteries, not included. USD 9.44." (from a 1979 brochure).
What's it worth? Take a look at this Tomy Blip price guide: sold listings for a value indication.