I've seen a couple Illuminati DX-50 XLR (precursor to the Orchid) for sale here used recently, and in your price range.
I've used at least 10 digital cables over the last few years and this one is very very good for the money--maybe lacking a little in detail compared to the more expensive ones, but not by much, and quite smooth. I still use one backing up a $600 Argent Jaden digital cable.
Also liked the Wireworld Gold Eclipse, but you may not be able to find that under $100. And there's the Cardas, too, which is also quite smooth but with decent detail.
Good luck.
I've used at least 10 digital cables over the last few years and this one is very very good for the money--maybe lacking a little in detail compared to the more expensive ones, but not by much, and quite smooth. I still use one backing up a $600 Argent Jaden digital cable.
Also liked the Wireworld Gold Eclipse, but you may not be able to find that under $100. And there's the Cardas, too, which is also quite smooth but with decent detail.
Good luck.