THEY DO sell them separately you just have to order them, I bought the package though as I wanted a SC, to find these two sites took me seconds, have you googled "Celestron Evolution Mount" as I did
https://grovers.biz/optics/home/7518...nt-tripod.html
Available in the UK, just Google, Try asking Simon at the Widescreen Centre,
I shop here for everything he knows me well
https://www.widescreen-centre.co.uk