Every time I re-watch the Granada version of CHAS, the woman's outrage at her maid selling her letters makes me want to add "...and after all these years of my paying her 3 shillings a week, too!" Looks like I wasn't that far off. You can see why CAM offering the equivalent of 10 years' wages for a few letters would look very tempting to impoverished, overworked maids.