Product rating is a bit pointless since various sellers have jumped on this product description to peddle whatever version they have good or bad. "Loom Board Colours may vary" - it's more than the colours that vary! One thing is clear, at prices from £3-£5 you are not getting a genuine rainbow loom and it does not claim to be!
The first one I ordered was from China Outlet and it was very close to the pictured product, i.e. looks very much like an official rainbow loom with the exception of the red arrow. It came bubble wrapped with a decent hook, again a clone of the official one. It seems sturdy quality. Unfortunately it was dropped on the first day and a couple of hooks broke - I'm sure that would have happened regardless of the brand.
The second I ordered was from DayzHappy - this came in a box with a packet of bands, a very basic hook and a very cheap and nasty loom that looks like it willlast 5 minutes.
So I guess it is hit and miss what you get. Amazon should really tighten up on these type of listings.