Since I can't sleep:
TIE Bomber:
2 laser cannons (wingmounted), 2 warhead launchers (second tube, next to pilot), shields and hyperdrive supposedly optional, never heard of that before.
TIE Defender:
4 laser cannons (on the wingtips of the two lower panels), 2 ion cannons (on the wingtips of the upper panel), 2 warhead launchers for concussion missiles and proton torpedos (on the bottom of the pilot module), comes with shields and hyperdrive.
TIE Interceptor:
older versions: 4 laser cannons (wingtips), no warhead launchers, shields or hyperdrive
newer versions: 4 blaster cannons (wingtips), 2 laser cannons (bottom of pilot module), shields optional, hyperdrive available if pilot is officer (I did not know that, hey, I learned something during my insomnia ... wonder if that will impress my boss tomorrow morning when I fall asleep in my office ...)
TIE Fighter:
2 laser cannons (bottom of pilot module), no shields, missiles or hyperdrive. Shields supposedly available as a later upgrade.
Trivia: TIE Fighters were supposed to be blue at first, this was changed when they became transparent due to the blue screen technique. The sound is a combination of an elephant's scream and a car on wet pavement.
And while I am at it, this one would make a nice looking M3+:
TIE Oppressor
2 laser cannons (bottom of pilot module), 3 warhead launchers (on the side of each of the three panels), has shields and hyperdrive.
As for your question, Hieronymos, I'd like to fly a TIE as a playership, and with the most powerful being an M4, that has rather limited applications. Price is a rather secondary concern, I'd fly it if it was 10 million ... especially if I could cap it *snicker*