Niagara Cycle lists both 26" and 700C complete dynamo wheels for under $71 + shipping. Still a bargain even if you have to pay an LBS to true and properly tension on receiving them. This is a price decrease as last I checked these were about $80. Below is Niagara's Amazon listings for both wheels.
http://www.amazon.com/s/qid=12914018...2Ci%3Asporting
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Gear Hubs Owned: Rohloff disc brake, SRAM iM9 disc brake, SRAM P5 freewheel, Sachs Torpedo 3 speed freewheel, NuVinci CVT, Shimano Alfine SG S-501, Sturmey Archer S5-2 Alloy. Other: 83 Colnago Super Record, Univega Via De Oro
Visit and join the Yahoo Geared Hub Bikes group for support and links.
http://groups.yahoo.com/group/Geared_hub_bikes/