5km WiFi transmission antennas

Maspro Denkoh has created a 5km WiFi transmission link via their antennas and even a 1km one between their compact antennas. These are probably line-of-sight, but who cares. At 40 cm long for the 5km model, I’d get some imported from Japan (they’re not planning on overseas sales). Unfortunately the pricetag is a bit steep … $5,254.
Slashdot < ComputerWorld