[SallyintNorth]

I always think Fasinex is a bit expensive:


Fasinex 0.8l - £49.55
Tribex  2.2l -  £36.39

Don't forget to check the dosage rates when comparing prices - I looked up Fasinex and Tribex in NOAH, and Fasinex is 1ml per 10kgs, Tribex 1ml per 5kgs - so you'll use twice as much of the Tribex.

Also, price per ml goes down as pack size goes up.  I found the Fasinex available online for £39.99 for 0.8L, £83.02 for 2.2L.  The former pack will treat 160 x 50kg sheep = 25p/sheep, the larger pack treats 440 x 50kg sheep = 19p/sheep.

That 2.2L of Tribex treats 220 x 50kgs sheep, at a cost of 17p/sheep.

So I agree that the Fasinex is more expensive - but 12% more, not the nearly 400% your figures suggested!