Hi Stephen,

Thank you for contacting Mearto with your appraisal inquiry.
Appraisers associations typically view gallery pricing as retail values; the values assigned by Mearto are fair-market, for auction purposes. The standard calculation is that a fair-market value is 2-3 times lower than a retail price, so in this instance, based on the retail value of $7,500, a fair-market value at auction would be $2,500-3,500.
If you'd like for your appraisal to include dimensions, which is customary, please forward in the comments section - at your convenience - the height and width - and I'll update this ASAP.
Based on the photos and information provided, and subject to examination, this is:

Deborah Anderson (British, born 1970)
"I Will No Longer Be Silenced," 2018
edition # 1 of 5
(DIMENSIONS)
PROVENANCE: purchased from the artist
$2,500-3,500*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, and thank you again for using Mearto.