I was after one of these sets for a while, and found a worker at reasonable price, mine has a CVBS input too.
https://www.radios-tv.co.uk/wp-conte...C006020006.JPG
They come up regularly, the problem is the rare silicon used in the chopper and line output, probably best look out for another and keep this for spares. I've got a BK 467 if you want to see how good the tube is, PM me and I could test it for you.