https://www.wheelsports.de/Nach-Marke/Singular/ (the Shop link on the Singular site now points to this page)
... and perhaps some new stock. They may have changed distributor (I think that Sam posted about this a while back) and there are also some discounts!
Not really a new shop, it's the webshop of the company with which I had a partnership for a time. That has now been discontinued and they are selling off all old stock - yes, some deals to be had! I hope to have some new versions of old favourites available via a different distribution model in spring 2019.
I'm enjoying my Swift (which I bought last November) but will be interested to see what treats you have in store in the Spring (did I see something lovely by way of a new Pegasus pop up on your Facebook feed a little while ago? Sadly it's likely to be way outside of my price range.)