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Short answer: sort of. I believe their base prices are similar if not the same but you will likely have to pay shipping and handling on the DVD set, especially depending on what country you live in. Essentially, the DVD copy in one way or another will cost a small bit more.
To elaborate, X-Plane 11 went final March 31, so I'm excited to say all purchasable versions will be available very soon. As always, the digital download is ready for grabs; a Pro-USB key is now available, as well as the Steam version, and the DVD sets, as of now, will be up on the website shortly.
This site is no longer being actively maintained.