The selection on YayImages web site is extensive, but I was never able to download any images. Have tried to do so multiple times over past 1.5 months, so it isn't a temporary issue.
Every attempt at downloading causes a "Secure Connection" error:
"An error occurred during a connection to yay-images.s3.us-west-004.backblazeb2.com. Peer received a valid certificate, but access was denied.
Error code: SSL_ERROR_ACCESS_DENIED_ALERT"
I wrote to YayImages support three times. Once in the "Questions" section here (where they recommended I contact their support directly) and twice via support tickets on their site to which I never received a response.
Had to refund the deal. DepositPhotos is still my go-to for image assets.