I got myself a Sega Mega CD on ebay. It cost under £60! and came with a load of games! ... and then I had to spend £10 on a composite cable so I could connect it to my monitor because I don't have any RF inputs. ^_^;;
But!
I now have a Sega Mega CD. Model 1! ^_^
Wow, Cobra Command is a terrible game...! *_*