In case you never heard of them Humble bundle is a site that sells game bundles for charity. They are currently running a unity bundle
You pay based on tier system which are
$1 To Unlock
Games = Oxenfree, AER Memroeis of Old
Asset packs = Inventory Pro, UFPS: Ultimate FPS, FlowCanvas
$11.84 To Also Unlock
Games = Wasteland 2: Director’s Cut, The Final Station, Last Day of June
Asset packs = Realistic Effects Pack 4, Ultimate Game Music Collection, GameFlow
$15 To Also Unlock
Games = Torment: Tides of Numenera, Shadow Tactics: Blades of the Shogun
Training course (which to be honest doesn’t look any good) = Discover Unity Game Development – From Zero to 12 Games
Assets = Ummorpg, Heroic Fantasy Creatures Full Pack Volume 1, Universal Sound FX, Gaia
While the course at the 15 dollar tier doesn’t look good the Unity assets are a steal at that price.