Alrighty. After looking up some stuff I realized that a soundwave with ALL of the casettes is a very unlikely thing. There were many cassettes throughout the years. I have made a little price guide for soundwave fans like myself. Feel free to tell me if something is wrong!! The prices are in US dollars. The first price is unopened, the second price is loose. I think.
I also included blaster and his casettes on the list. I did not put any japanese stuff on this list.
G1-
Series 1:
Soundwave + Buzzsaw...345.00.....155.00
Frenzy and Laserbeak (metal feet)....85.00....20.00
Ravage and Rumble....105.00....25.00
Series 2:
Blaster.....350.00....100.00
Series 3:
Ramhorn and Eject (gold weapons)....65.00...15.00
Ramhorn and Eject (silver weapons)....70.00....18.00
Rewind and Steeljaw (gold Weapons)....52.00.....15.00
Rewind and Steeljaw (silver weapons)....65.00....18.00
Ratbat and Frenzy (gold weapons)....75.00.....16.00
Ratbat and Frenzy (silver weapons)...55.00.....15.00
Ravage and Rumble (plastic feet)....115.00.....24.00
Series 4
Ramhorn and Eject (painted details)....32.00....7.00
Rewind and Steeljaw (Painted Details)...46.00....14.00
Ratbat and Frenzy(painted details).....60.00....18.00
Slugfest and Overkill...55.00....7.00
Series 5:
Grandslam and Raindance...75.00.....24.00
Squawktalk and Beastbox.....85.00.....35.00
Series 7:
Blaster w/Flightpack...28.00....9.00
Soundwave w/wingthing....25.00....14.00
Botcon '06
Buzzsaw and Laserbeak....85.00....35.00
Beastwars:
Buzzsaw....55.00....15.00
Lazorbeak....15.00....7.00
beast machines
Buzzsaw....8.00....2.00
Mutant Beast Wars:
Soundwave....16.00....4.00
Machine Wars
Soundwave....25.00.....6.00
TRU Reissues:
Soundwave w/Ravage and Leserbeak....45.00......11.00
Heroes of Cybertron:
Soundwave....12.00....5.00
Universe
Soundwave w/space case....20.00...5.00
Cybertron:
Soundwave w/laserbeak.....25.00....6.00
Legends of Cybertron:
Soundwave...10.00....3.00
Titanium
3" Soundwave....9.00....2.00
6" Soundwave w/laserbeak....25.00....6.00
Whew!!! I hope that someday I own all of those.