Desktop vs Online Pricing

I just received an email letting me know I can buy Desktop and save $10. That email also seems to want me to go online with Turbotax, with special offers starting a month from now, very likely after the $10 discount disappears. 

 

I head for Turbotax online and I cannot find anything that indicates what my price would be if I do my taxes online, with or without any discount. 

 

How can I compare the pricing of Turbotax online vs desktop?