I have for sale couple of these red dot sights. New, in the original package.
(https://www.sigsauer.com/store/media/catalog/product/cache/1/image/1800x/040ec09b1e35df139433887a97daa66f/R/o/Romeo-5-new-LF.jpg)
https://www.sigsauer.com/store/romeo5-1x20-mm.html
What is not shown in the picture is, that package includes both high and low mount.
Price: 194 euros, shipping included.
I have couple more of these for sale, 189 euros, shipping included.