A lot, I imagine, even as a loss leader. It was something like two bucks a play, far more than I could then afford (that would be about $5 now with inflation!) the one time I saw it in person. And consider too, the kind of flagship place that can devote the space and power a setup like this needs, is exactly the one to benefit most from something like this that, as I can attest, drew kids' attention like no magnet ever invented - and even we who had not enough quarters for that game, mostly still had enough for others.

Namco being maybe one of two or at most three leading arcade marques, I think it would work about the same for them in marketing terms.