The entire series can be bought for $322, $46 a season. More than half of the price they first came out at.
Still fairly expensive for recordings of a TV show.
For $325 you get 178 episodes (plust the DVD extras) in better quality than your local cable provider can provide, minus commercials and any banner, dancy, flashy ads your local station runs during the show.
That's less than $2 per episode, BTW.
And, yes, that's more than half the price they were when the first came out -during which time I gladly paid full price (well sale price at Best Buy during their first week of release.)
I'd say that's a fairly good deal to get a show as classic as TNG and the ability to watch it and any episode you want any time you want.