Horse manure!
$30-40 is where just about everything else sells, why should Trek sell (even the old standard-def version of TOS) at 3-4 times that?
What other shows are selling 7-disc Blu-ray sets for $30?
I don't know about Blu Ray specifically, but the standard price for season sets is between 30 and 40 dollars with a very few up to 50.
Stargate, new BSG, X-files, etc all retail in that range., barring a sale or going to Wal-Mart.
Explain why Trek routinely sells for 3x that or more per season.
Where the hell are you buying your blurry series from. New releases on blurry for full season shows (that's currently 22 episodes) go for 45-70 dollars typically in the US. BSG sold for over 60 when it came out, from sites like amazon, places like Walmart, target best buy.
Now years later you can see some steep discounts and sale prices that get shows lower like two season of BSG are 19.99 on amazon for a small period of time, but they will go back up.
The only bluray shows I see in the normally 30-40 period are shows that did half seasons or less, meaning shows that produced 13 or fewer episodes a season. Or full season comedies, roughly the same as a 13 episode hour long.
Walking Dead 26, for six episodes
Downton Abby 30 for ten episodes
Sherlock 26 for three episodes
Games of Thrones 45 for ten episodes
Tons of examples.
Now with services like Amazon in the first year of release most shows at some point will get a hefty discount. A show that might for most of the year sell for 50 will drop to 39 for a few weeks, ect.
And network shows tend to sell a little cheaper. Cable and syndication shows all tend to sell at higher prices. Cable often being per hour very expensive even with sale prices.
And all the Bluray tv series currently out are just released on bluray. They don't spend a months doing new technical work before they can release them. Both TNG and TOS had excessive new expenses that other don't have.
Seriously based on your post I think you are confusing DVD with BluRay
X-Files the tv show isn't released on BluRay and when it came out on DVD sold for 99.99 it took years and going to smaller sets before the price of the X-Files DVD dropped. Now they are cheap, but it's been over a decade.
Stargate has only released Stargate Universe season sets on BluRay, Atlantis is buy all or nothing currently, and SG1 has never been released on Blu-Ray.