Rogue valley has a band.

The Antique Rose Emporium sells a 2 gallon sized plant for $19, and it is listed as being in stock on their website.

Palatine sells it grafted onto multiflora if you prefer it grafted.

HMFRoses lists quite a few sources for it. If you click on the "view all nurseries selling this rose" tab at the bottom of the "Buy From" page, you will be able to see all the sources.

Here is a link that might be useful: sources for Dortmund

Highcountryroses.com