Sorry, before anyone needs to correct me, yes it is a different one
than the one often on Ebay. I was thinking about the one that comes
up for sale in the U.S. now and again.

Odd to sell the pricing based on UK currency with the pound down
these days. But maybe that's the point to make it seem like a better
deal now

I thought all the EMS filters were diode based. The seller mentions
later ones weren't.

-nick