I don't know if they do offer a sidecar for the new Enfields or not, it would be great if they did!
They have similarly styled other "Bullet" model variants that have more of a saddle on them for a passenger. They're all around $5-6k for a new bike, not bad at all compared to some out there.
I just did a quick search on them. Seem a bit small for what I need. I'm 6' tall and about 265#. My wife is still beautiful as ever but she's not as small as she once was either. I may need something a bit bigger for both of us to be comfortable.