A biography of Beau Brummell suggested that a pound was about $100 of current American purchasing power.
Picketeny suggests that 1000 pounds a year or a little less was considered necessary for a "Comfortable" life of the gentry. That is consistent.
We should have 3 cautions on that comparison, though.
1) Not the wild splurges of the Prince Regent could buy him a cell-phone -- nor a sewing machine or a flush toilet, for that matter.
2) Some of the things which are/were available in both times have different relative values in the two periods. Aluminum and silver were of comparable worth back then.
3) The cost of services in goods was much lower back then. Wesley paid his traveling preachers 12 pounds a year _plus expenses_.
If we take that $100 value for a pound, that would mean that a shilling was worth about $5, a penny about 40 cents, and s farthing about a dime.