Might be old news, but it's just gone up on GOG.
$14.99, no DRM, no exact release date yet, just 'within a few weeks'.
Also, they've just added Tomb Raider 1+2+3 collection for $9.99, and have 40% off The Witcher 2: Enhanced Edition for the next week.
www.gog.com
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"My name is Ezio Auditore da Firenze, and like my father before me, I am an accountant"
Nothing is true. Everything is tax-deductible