"Raw" prices here at E C Snaiths (Cranwell)
https://www.ecsnaith.com/medals-ribbons.html
Medals engraved with Service Number, Rank & Name will be more valuable, as they will be attributable to an individual/act!
Multiple named medals will multiply value! as uniquity will increase!
A Tailor once queried my medal order as my Herrick was before my Iraq!
I was the first TGx into Bastian, then the last TGx in Basrah! But my medals were deemed to be in the wrong order as Iraq happened before Afghan!