Used cars when?

[m7ammed]

sorry if this has been posted before(i did a search ),but is there a thread with all the used cars and when do hey pop up ,and if a car comes to the used car lot does it do that in a regular fashion ,like I read in another thread about the mazda 7b7 its there for a week in day 6xx to xxx ,does it come every 6xx days or only once. and I can't seem to find the M coupe .