Warframe - big value for money by comparison?
£48 for Destiny - not that I feel it wasted, mind you, level 20 already, etc, but entertaining enough. Glad I didn't pay for the fat £85 version though! About 20-ish hours into it.
However I've clocked over 400 PS4 hours on Warframe - it's free. I still really like it even though it's become a bit of a grind now, and paid only around £15 into it for some of the things that need 'platinum' currency to acquire. Warframe doesn't really have much story as such, not in the sense of Destiny, but there's a great many ways to kill things and a lot of missions to do and many character classes ("Warframes" which are your battle platforms/suits) with a large variety of special abilities from defensive to offensive, plus hundreds of mods for your weapons/warframes/companion units.
Easily worth a download. If you like Warframe then you'll likely like Destiny (if you've not got it and wondering about the purchase) and they're different enough to be able to keep both going. Destiny is more immediately accessible as a game, Warframe is pretty hard on noobs till you get some rank into your gear which doesn't take too long.
Oh, and if you try WF, go with Mag or Volt for your starter 'frame, imho ;o)