all in all i'd give it a solid 5 stars even if it is a reboxed product, simply because it's good value and a great way to get into the game or to lure friends in that doesn't revolve around khorne and the stormcasts.
It's also tremendous value as a army set for non-GW games. I picked up a few of the sprues and some Biostrip-destined figures from my local shop when I got back into gaming, and they're terrific figures. They're also very "mass-battle-friendly", in that the spearmen are (or can be positioned) with their weapons upright. For £50, you get two full-sized (24-point) Hordes of the Things armies with additional options:
Skaven from the following:
6 x hordes @1 point (bases of five skaven infantry, so 30 of the total)
4 x warband @2 points (bases of three of the fiercer-looking skaven infantry with the hero, gunner and beast master thrown in)
2 x behemoth @ 4 points (the rat-ogres - which are just the perfect size for HOTT behemoths)
2 x artillery @ 3 points (flamethrower and mortar crews)
1 x sneaker @ 3 points OR 1 x lurker @ 1 point (the spare skaven infantryman from above, assembled thus):

Or you could configure the infantry as a mix of spears, warbands and/or hordes.
Elves from the following:
3 x spears OR 3 x shooters @ 2 points
3 x blades @ 2 points
1 x aerial hero @ 6 points OR 1 x flyer @ 2 points OR 1 x "dragon" @ 4 points (the griffin-rider)
1 x hero @ 4 points (the mounted leader)
2 x riders @ 2 points (the rest of the cavalry)
1 x magician @ 4 points (the wizard)
2 x cleric @ 3 points OR paladin @ 4 points (any of the command figures left over from the infantry allocations)
Or you could just make a two-figure infantry base with an officer or a standard-bearer.
I'm labouring the point slightly here, but I can't think of a better purchase for someone who wanted to get into HOTT or a similar game.