I have been closely following the updates on http://x-tensive.com/ and been impressed with the new features that keep getting added into DataObjects.NET. A few days ago, I saw the 50% sale blog post here and thought it would be very interesting for anyone that wishes to start using DataObjects.NET but feared could not afford the price.
DataObjects.NET ORM is very feature rich, well designed and will certainly save you countless development hours by making you think about the domain and code rather than SQL. For your information the new fact aggregation and comparing site http://9facts.com uses DataObjects.NET behind the scenes. 
For me, that is a testament that shows versatility of a product. The X-tensive guys decided on dogfooding their own product and it has worked very nicely.
Links
http://dataobjects.net
http://blog.dataobjects.net/2011/12/big-winter-sale.html
http://blog.dataobjects.net/2011/11/upcoming-major-update.html
http://9facts.com/About
http://blog.x-tensive.com/2011/11/weve-launched-9factscom.html
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