I certainly haven't spent that much on speaker cables, though I have looked, and been tempted. I know some fellows who have more money tied up in cables/cords then they do in equipment, but in my mind, that is the lunatic fringe. They seem to be happy though, so I certainly don't object.
Some folks insist on speakers being 75% of your budget, some say cables 10-20%, some say source should be your primary expense. That's why this hobby is so much fun, there are so many paths to audio nirvana.
Whatever floats your boat.