We have full-page PDFs with ca. 5% surface anti-copy-sign overlay on our web-page. We consider that sufficient to peruse the music offered.
Additionaly we have full-lenght YouTube audio/sheet-music recordings available for many of published titles.
Our scores are also published in their entirety on YT:
https://www.youtube.com/channel/UCXcWmtBNv73Ga-Sdot3nP-Aand you are
invited to browse through them.
For years we have sended out printed perusals to addresses across the globe. But we are very much hesitating sending perusal copies even to US lately, as some years ago one of „prestigious“ Ivy League universities performed a piece - published by us - with its male choir with over 100 singers. They were sent a free perusal copy of the piece performed, but did not buy the copies needed for the performance.