DailyALert.com rocks. Stock Market traders would love to use it for trading daily (buy/sell) signals. I like it a lot but have you cheched the stock market lately? It would be worth at least $1,500 then, now? Maybe can be used for a daily reminder service instead. There is plenty of those. I 'd say at least $500 to the right entity.
BikeTourist.com is also great, but lesser commercial value than BikeTouring and BikeTours. This would be an ideal site-resource for people visting places by bike in the US, EUrope, or ?? dunno.. AUstralia??..