was she worth it?, n. — Green’s Dictionary of Slang

was she worth it? n.

also seven and six

[the then price of a UK marriage licence, 7s 6d (37½ pence)]

(bingo) the number 76.

1945		J. Henderson Gunner Inglorious (1974) 106: Seventy-six, seven and six, she was worth it.
1965		D. Potter Stand Up, Nigel Barton Scene 12: All the sixes, clickety-click. Number Ten, old Wilson’s Den. Nearly there — eighty-nine. Was she worth it? Seven and six.’.
1981		P. Wright Cockney Dialect and Sl. 110: 76 = was she worf it?
2001		J. Burkardt ‘The Bingo Code’ Wordplay 🌐 76: was she worth it?