I just discovered a pretty good supply of ramps in different sizes over on Overstock.com. The shipping is free for orders over $50. New customers may be eligible for free shipping:
(Overstock.com New Customer FREE SHIPPING offer applies to U.S. orders only. For expedited shipping, additional charges apply. The free shipping offer applies to the lower 48 states and APO/FPO destinations only. The offer excludes Alaska, Hawaii, and international orders. The offer excludes orders comprised solely of products from “Books, Music, Movies, & Games”, “Electronics”, “Donations”, “Cars”, “Travel”, and "“Insurance”.)
Full ramp list HERE
Thresh hold ramp $37
I might need to throw in this cup holder for $12!!