Gumtree ad:
http://www.gumtree.com.au/s-ad/warwick/bicycles/elite-arion-parabolic-rollers/1051425611

Darren 0407179180

This type of roller currently selling new for $283.70 on wiggle.co.uk

Folds up to a compact size. Only used a handful of times.

As new apart from a couple of scuffs from a wayward front wheel.

Adjustable for bike wheel bases from 944-1114mm