There is nearly always an offer on, even without a coupon. Either half price membership (£5 plus £4.95 group cost so £9.95 on your first night) or full price membership but first week free (so £10 to pay on your first night.
Theoritically your first night cost should be £14.95, but I have never seen that happen and I have been on the team registering new members since May last year.
That said, I think there might be a magazine offer at the moment for free membership, but do check before you buy the mag - if it just says half price membership, dont bother buying it unless you were going to anyway, as thats on offer at the moment with or without a coupon.
There was free membership with buying a 12 week countdown recently, but that ran out in January. I have a feeling it might be on again in March, but cant be sure of that.
It might be worth giving the consultant a call to see what offers are around at the moment.
Whats also worth remembering is that at all times you get a free week when buying a countdown - one free week when you buy a 6 week countdown, or 2 free weeks when you buy a 12 week. You MUST book holidays at the time though - you wont be able to book them later and will just lose the week - so if you arent sure what you are doing, it might be better to get a 6 week - the free weeks offer works out exactly the same. Sometimes the 12 week countdowns have a better offer though (free receipe book, or the free joining fee to new members that was on recently)