Very disappointed - we were on a wine tour with 10...

Very disappointed - we were on a wine tour with 10 people - we did some tasting and we were charged $15 per head - we weren t advised of this charge until the end - happy to pay for tasting as there was 10 in the group but $15 per person ?? We were then advised that the cost of the tasting would be wavered if we purchased wine - I purchased two bottles and was advised that the cost would only be wavered after purchasing 3 bottles needless to say there was limited wine purchased on the day - very disappointing indeed.