Sure... I ordered a Topas cabin multi-wheel which came out to around USD 640 including shipping... $340 off the USA retail price... and paid for it with my Chase BA Visa.
I did not use any discount codes and used Google Translate to guide me through the checkout process as I don't speak German. I also didn't notice any indication of where it mentioned whether something is in stock or not, but I wouldn't have been looking for something like that.