28th January Tranmere broke their transfer record

Tranmere broke their transfer record in January 1967, signing George Hudson from Northampton for the sum of £15,000.
On 28 January 1967, he was part of the team which won 4-1 at Exeter, and indeed scored the second goal.
Was the expenditure worth it ?
At the end of the season, Tranmere were promoted!