CC Free Site Night Vouchers

Good Afternoon everyone,

We are constantly looking for ways to keep our caravanning costs down, and one way is through the use of the site night vouchers.  There are many of these for sale on various auction websites, I was wondering if any of you had ever bought any?  Any good news stories, or horror stories.  I notice that on the voucher it says "not for resale", so what is the clubs position on this?  any thoughts gratefully received.

Nick