Also known as British. It's likely 68 mm wide and you can confirm this by measuring.

For cheap wheels, Nashbar runs sales pretty often that bring the prices on Vuelta wheels down to the low $100's. I picked up a set of Vuelta Corsa HD wheels for something like $120. One thing to be aware of: new road wheels are going to be built for frames whose rear dropout spacing is 130 mm. Yours may be 126. You'll want to take off your back wheel and measure the spread, inside face to inside face.