A round-trip Economy seat from Boston to Geneva next October (for example) --- with a free stopover in London --- incurs a YQ charge of only $294 per ticket.

And CW seats for the same trip only adds $30 per ticket.

That doesn't seem unreasonable, to me. In my view, taking second choice on your preferred destination in order to avoid YQ charges is somewhat short-sighted. And you're talking to a real cheapskate (me)!