They're in South Africa, and their products are both showing "out of stock". In the FAQ, there is this:
Q: Can I load my Harley Davidson? A: NO! EasiRyder is not designed to accommodate the big "Cruisers" , the Harley Davidson range of motorcycles or even the BIG BMW's. If you are unsure if your motorcycle is suitable for towing using a EasiRyder, please contact Darryl at 061 034 5949. Our primary concern is safety!
At SAR 6,100 ($435) it would seem reasonable if you needed it - shipping would likely be tough.