Thanks for your information Mr. duncan520. Would love to see your designs.
But what about this ramp selling from Toys R Us? Looks pretty good and the review seems ok...
You can buy skateboard ramps for around $500. Look around for skateboard shops around TST or CWB.
..This year for my Design project i created a 'tabletop ramp / race start mechanism'. Building a ramp is pretty simple, all you need is a piece of plywood and a base block to rest it on
Its meant to be a modular design so other people's ramps can attach next/onto mine to form a long linear ramp this was just a prototype so i couldn't make more than one!