Firstly, It's not a premium domain......
Only 1 confirmed sale over $100 in the last 3 years which was a reseller and 13 confirmed sales in total......
Domain Price Date Venue
xxx.photo 305 USD 2020-05-24
Dynadot
v.photo 15,000 USD 2017-07-28 Uniregistry - forwards to
http://www.vphoto.cn/pc/index.aspx
your.photo 3,500 USD 2017-06-16 Uniregistry - forwards to
https://bit.pub (which does not seem to work)
joe.photo 1,200 USD 2017-02-28 Uniregistry - forwards to
https://www.flickr.com/photos/joerivera
stock.photo 16,000 USD 2016-01-11 NamesCon - does not resolve
steve.photo 2,280 USD 2015-11-04 Uniregistry - forwards to someones personal photos
live.photo 3,480 USD 2015-10-19 Uniregistry - does not resolve
hello.photo 7,500 USD 2015-07-14 Uniregistry - does not resolve
group.photo 12,500 USD 2015-06-04 Uniregistry - forwards to
https://www.groupphotos.com/
epic.photo 4,000 USD 2015-02-08 Uniregistry - website:
http://epic.photo/#/options/size
bay.photo 3,000 USD 2015-02-08 Uniregistry - does not resolve
magazine.photo 1,834 USD 2014-09-03 Private - not even a proper website
https://magazine.photo/en
agenda.photo 1,833 USD 2014-09-03 Private - 403 access denied
So out of 13 sales, 1 is a reseller & 4 are being used for commercial use (3 acting as a forward to the main site). This shows there is there little to no liquidity and very little end user appetite for this extension.....
I think you will struggle to sell this.......