[thaumasiotes]

The £200 of passive income presumably came from a stock of wealth. And the passive income by itself was still 6 times the salary of the live-in maid. The stock of wealth should therefore have been valued similarly to six healthy female slaves. (Give or take some adjustments, but broadly similar.)

[nicoburns]

> The £200 of passive income presumably came from a stock of wealth

Given we're talking about Agatha Christie here, I imagine the £200 of passive income came from book sales.

[binarybits]

No, this was before she became a successful author. About half of it was an inheritance on her side. The other half came from his side.