Mark in Lexington:
Using an inflation calculator on the web, $100 in 1988 = $206.92 in 2017.
I have a February, 1988, issue of Consumer Reports. Of course, it lists full retail price, but it'll give you an idea for some of their washers tested in that issue. There's a range of models, of course, so I'm only including the ones they tested (I set these up in nice columns here but they deleted the spacing):
Admiral: $580 $1,201
Amana: 530 1,097
Frigidaire 499 1,032
GE 495 1,024
Gibson 429 888
Hotpoint 455 941
Kelvinator 419 867
Maytag 605 1,252
Norge 619 1,281
Sears 870 1,801 (electronic controls & dispenser)
Sears 520 1,035
Speed Queen 579 1,199
Ward's 439 909
Whirlpool 550 1,138
White-West. 499 1,032
Looking at the list, these were mostly the TOL models. There was a really nice feature sheet, full page, of all the models from the makers with feature comparisons.
So, definitely in today's Dollars, the prices were more in line than when I posted prices for the 1954 machines, which ran into the $2000+ range in today's Dollars. Of course, in 1988 I was only making around $30/hour as a health care manager, so those prices were definitely more dear to me! I had the next to TOL GE Filter-Flo, bought white in 1986. And loved it--Mini-Basket and Mini-Quick wash.