even though 50-60 bucks in one bulk seems quite a lot, i would say its more reasonable then ever... its like base game 20 + each expansion 4x10.
if you compare that to.. i.e. the sims 3 and its expansions... base game 40, each of the 15 or so expansions 40x15
http://store.steampowered.com/app/47890/or civ 5 (that is less ridiculous than sims with 30 base + 30x2 expansions).
gameplay wise i would still say it is the "best" space 4x out there, that makes the universe feel "alive" and "full" with all the civilian transports, passenger ships, mining ships, mining bases, ancient derelict ships to repair etc.. its not "just 5-10 fleets" and the rest is empty/planets. there is always stuff moving around all over the map, even sometimes overwhelmingly much once you start getting "xxx is under attack by yyy" every 5-10 seconds as 10 different ships are under attack by creatures or pirates all over the place.
it also has ship boarding/taking over ships or stations, fighters, asteroid belts, mineral demand system, tourism, piracy is pretty well playable with the last expansion, automation for pretty much everything, characters for planets/espionage/fleets different victory conditions for each race... quite a lot of "different" races, some have one special research tech, some have events like a 4 year festival happiness cycle or something.
well it doesnt look like EVE or X-Rebirth, but it has its own charm...sometimes, when you just watch stuff happening. there isnt much "planetary building" either compared to i.e. galciv2 or civ5 cities.
combat is also not a slideshow/movie (galciv/endless space) when 2 fleets bump each other, its all realtime and you can control every ship or nothing (guess it could be compared to sins of a solar empire... a bit). you can also trade blockade planets with your fleets or pirates do that to you.
the interface isnt the best either... you have the top and the bottom corners filled with interface boxes... so you have like a T shaped screen in the middle to see whats going on... compared to i.e. sins of a solar empire or stardrive it hasnt much "overview". (but i play in kind of low resolution... with bigger/wide screens its probably less a problem)
for me its still one of the best space games i played, it does quite a lot "right" for a space 4x.