i got the non expansion. now stopped playing due to no fun
depends plus u need the expansion for the story contents and free living stories
there r raids in the expansions as well
if pve is no longer fun (after u done all the things), u can always roll with us in wvw (large scale pvp), thats what most old players r doing
gw2 now still the value for $$ mmorpg in the market
a lot of new f2p mmorpgs juz come out and die off rather quickly, like couple of months later, complete waste of time playing those.
the EA mmorpgs also keep delaying, dunno delay how long already
nothing much in the market currently if u looking at mmorpg
lastly, u can ask for refunds within 30 days if u dun like it, 30 days is more than enuf time for u to test it out