$80?!? That's one of three bingo-esque games that Williams made - Hong Kong, Disc Jockey and Four Corners. All beautiful games. Four Corners is a couple steps above.
Gottlieb had a small series of trap hole games that worked on a similar principle. Chinatown, Shindig, and Watch My Line...
There's a reason! They wanted to attract bingo players. On each of these games, there are multiple ways to win replays, and at least one way to win a large number of replays (sound familiar?)
Williams also produced one 'card-style' bingo with their alternate playfield layout called Yukon, and one true bingo called Long Beach. Long Beach was available in the Multi at York, btw!
That was a good buy, whoever got it.
Many early woodrail games have next to nothing in the cab - transformer mounted in the head, steppers for scoring - etc. Not really a need to have a ton of hardware under the playfield where you can't reach it if you need to without unscrewing and lifting the playfield.