This looks like who makes them

That's what they are going for on ebay

Or you can buy them from

So $59 dollars each bulk (but non UK PSU) plus shipping or 185 + 15 delivery

One of the US ebay sellers says you can X10 them with a relay module.

Seeing I am new, I don't mind if someone else more established organises the money side.

But first wait until I get the set I one on an english eBay auction (OK I'm an idiot to pay 125 delivered, but I want to check the quality first).

What do you say, I think it could work

Dave 8O