No reason why the M should have its own market watch as many on the forum follow all the models so feel free to post up any you find whether good,bad,cheap or dear , it all helps to formulate a good knowledge of the Z4 market
This would be my pick of the current offerings ,
2007 SI Sport good colour, 48k & a decent spec for what i would consider a reasonable ask at £10750
http://www.ebay.co.uk/itm/BMW-Z4-COUPE-3-0-Si-6-SPEED-MANUAL-LOW-MILES-EXCELLENT-CONDITION-/331581311383?pt=LH_DefaultDomain_3&hash=item4d33c94997
& cheaper 56 plate SE spec with auto 77k £8950
http://www.ebay.co.uk/itm/2006-56-BMW-Z4-Coupe-3-0si-SE-77k-Silver-Black-Leather-6-Speed-Auto-MOT-Oct-15-/231589460764?pt=LH_DefaultDomain_3&hash=item35ebcebb1c
This would be my pick of the current offerings ,
2007 SI Sport good colour, 48k & a decent spec for what i would consider a reasonable ask at £10750
http://www.ebay.co.uk/itm/BMW-Z4-COUPE-3-0-Si-6-SPEED-MANUAL-LOW-MILES-EXCELLENT-CONDITION-/331581311383?pt=LH_DefaultDomain_3&hash=item4d33c94997
& cheaper 56 plate SE spec with auto 77k £8950
http://www.ebay.co.uk/itm/2006-56-BMW-Z4-Coupe-3-0si-SE-77k-Silver-Black-Leather-6-Speed-Auto-MOT-Oct-15-/231589460764?pt=LH_DefaultDomain_3&hash=item35ebcebb1c