First I found this extremely interesting. It's the first I've seen for values of Jones watches. Thanks, cellar, for the contribution.
On values back then, it's really hard to calculate. One source said the following:
Current data is only available till 2012. In 2012, the relative worth of $80.00 from 1885 is:
$1,990.00 using the Consumer Price Index
$1,830.00 using the GDP deflator
$10,800.00 using the unskilled wage index
$17,200.00 using the Production Worker Compensation
$18,500.00 using the nominal GDP per capita
$97,900.00 using the relative share of GDP
On values today, the market is thin and irregular. I once bought once for under $1000 and have one, virtually new, that one expert estimated at $10,000. I'd say that most I see are in the $2000-5000 range.