Wow....that's pricey stuff! Did you end up getting it? I use Vet's Best Hairball Relief and it has many of the same ingredients. Seems like I pay about $5 per bottle, and it comes in tablet form which my cats really love to eat as a treat. The renews of the Hairball Gold indicated it doesn't taste very good.
HI, no, I did not, and I also discontinued Vets best. It did not work for my Obi. What worked better was 1/8 tsp metameucil in 1 tsp water mixed in with his canned rabbit, once a day. And 5 mg pred.