not really for ballroom dancing (at least for the most part. different dancers have different preferences and it also depends on the floor you're dancing on). i do tango and swing dancing and my dance shoes are generic man and oliver spencer shoes w/ the original leather sole.
for me shipping + CAD exchange rate are the main things that make me get off the boat since that can boost the price 30-50% which is enough to make me want to rethink my life. or if the website ships with UPS since UPS are jerks about duties