Kakadu said:I want something I can find used in any bike shop any day.
But ask yourself how often you're going to need to find a new wheel on an emergency basis. In that last 20 years, I've had to replace one wheel (after my bike fell off a carrier going 70mph down the freeway).
I would think once you get the wheels, it isn't going to be a concern that you be able to walk in any bike shop any day and get a cheap 650c wheel. They don't make many cheap ones because it's generally the higher-quality bikes using them.
All the my local shops (southeastern Ohio) have 650 tubes and tires in stock at all times. I have no problems finding them. I'm not worried about the wheels since I don't see why I'll need to replace one on a moment's notice. But your circumstance may be different. Maybe you do.
Have you checked with a local Trek dealer? They may be able to get you OE wheels cheaper. Austin Bicycle Sport Shop is a good place with helpful staff. They carry Treks and can probably get you an OE wheelset.
After riding my 650s for a while now, I wouldn't trade them for 700s. What a huge difference it makes. I rode a Trek 1400 51cm "men's" 700C bike for 14 years. I recently got a Trek 1500 51cm WSD 650C bike. WOOO HOOO!!! It accelerates like a racer. And hills are a blast on this thing. I can do things on it I couldn't do on the 700C bike.
You're gonna love that WSD frame - assuming it's the right size for your frame.
Get you some 650s and enjoy.
Good luck,
Shannon