"How much and how did he propose to pay for this country residence?

As per prospectus of the Industrious Foreign Acclimatised Nationalised Friendly Stateaided Building Society (incorporated 1874), a maximum of £60 per annum, being 1/6 of an assured income, derived from giltedged securities, representing at 5% simple interest on capital of £1200 (estimate of price at 20 years' purchase), of which 1/3 to be paid on acquisition" (U17.1657)