CSJ do all the shows where they give out samples - they have increased their range of late - the most expensive one being £29 a bag - (this may be the one you refer to) I have had many, many samples from the company, but confess not to having used to food so do not really know an aweful lot about it, but I know several who feed it - and their dogs look on it. CSJ also do fish skins (mine love those) and some good dietry suppliements, including Calm, stroppy bitch etc etc. A very very nice company to talk to!
regards
DT