Anyone want to share the best place to buy these from?  Decided a 12.5kg bulk box must be more economical than buying smaller quantities...
Best price I can find so far is £31.85 inc delivery costs.
Thanks :-)

I would worry they would go stale before using them all

Cheapest place I've found is Feedem, which comes out at £31.85 including delivery so I assume is what you've already found? Buy a bag of dog food as well (or even 2 boxes of Markies, or a box of Bonios!) to take the price over £45 and save yourself the £5.35 delivery charge :-)

Thanks Kaye.  Yes, looks like Feedem is most competitively priced.