Aren't "selfies" by definition "photos"? Which could make the TLD a bit redundant. Also, you take a plural keyword and use it with a relevant but singular TLD, which makes it sound a bit awkward IMO.
Selfie.photos would be better, or even selfie.photo as the keyword singular ties in with the TLD singular.
Price is almost impossible to say with new TLDs, people buy them, and for large sums, but it's rare. In general I see plenty of really good ones but barely any end users are interested yet, and for that reason neither are domainers for a quick flip etc.
I'd say it's worth low $xxx to someone, but I doubt you'll sell it anytime soon, 2-3 years maybe. (this is based on renewal not being silly prices)