While this is true, it is a bit misleading. Newly made katana (shinsakuto) that are perfectly suitable for use and completely traditionally made can be had starting at around $7000 complete. These aren't made by award winning smiths, and don't have the art polish that a master's blade would, but they are authentic nihonto. Check out Nishijin Sword, Swordstore.com, or Mugendo Budogu for places that can get you a shinsakuto.
In some instances you can actually get lucky and get a blade made by an up and coming smith that eventually gets a Juyo rating at the annual Token Kai. Then the $7000 sword you bought would jump to two or three times what you paid. Doesn't happen often, but it has been known to happen.
Many production blades are plenty well made enough for regular use. Of course, they aren't fully traditionally made because that would make them as cost prohibitive as nihonto. There are many different places to purchase decent Chinese made production swords, but you have to have some knowledge in order to make sure that you are buying a decent product from a reputable dealer.