I have been searching the eBay for Razordon models for a price I want for years without any luck. They always go over the GW prices. Postage is a big factor, especially now that eBay started their universal postage system. What a rip off!
On the other hand, I have had a great luck with Finecast. In the past year and a half I have bought: Trazyn the Infinite, Orikan the Diviner, Nemesor Zahndrek, Illuminor Szeras, Herald of Khorne, Be'lakor and two packs of resin Flamers. All of them without any flaws. Not even bubbles. Same with all the other models I have.
Resin is a pain to glue together, but right techniques help. Use super glue or spesific resin glue (like Loctite), plastic glue doesn't work. Pin if possible. Create more surface for the glue to act by scratching the surfaces you are about to glue (also, leave of the dust on the surface, as it will accelerate the bonding). And try not to drop your models (sigh)...
Good luck with your hunt for hunting packs!