What would be reasonable prices for some stuff I would like to sell?

I checked on eBay, and there, it really goes from 1€ to 200€, so I'm a bit lost.

I would sell :

- Commodore CDTV (saw one on eBay for 139€)
- Commodore CD32 (eBay was one for 169€)
- Commodore SX64 (there was even one guy asking 555€, otherwise there's one auction already at 140€)
- Commodore Amiga 1200 (my refurbished one, which I paid 150€ from www.amigakit.com)
- Sega Saturn (Seems also to sell quite good)

I want to sell all my other stuff too, but selling f.ex. a C64, testing it, taking some pictures, wrapping it up, going to the post office to send it... and eventually getting 15€, then I'd rather give it to someone here.