Interesting, not a single kit is from warhammer fantasy, these are all "brand new" AoS armies.
It's hard to judge if they are good value without knowing the price, each box has one or more units that don't see much play on the table (slaangors, Mortal slaanesh wizard, LRL banner dude, skeletons, Obr scyth hero, stalkers).
Hopefully the discount is high enough so that it's not just about getting one of these to-be-shelved units for free.