I've had my tantalus for a while -- it's a finicky model even by
FW standards. You'll need the trusty heat gun and greenstuff for it most definetly - I had some horrible fitment on the front of the prow, but solved with a bit of blood and thunder.
They are making more from what I was told last time (I want another one) - so I'd hope to see it back in the store soon if not within a week or so. They sold out right after
IA released :(
As for razorwings -- don't buy
GW. Buy the Zombicide Murder of Crowz box -- nets you 15 of bases with 4 birds each (and the sculpts look better by a large margin).
Should set you back 20$ per box of 15, amazon prime