They are worth 4 times as much at various hotels. Me and the wife stayed at the Lygon Arms in Broadway (Cotswolds) for a spa weekend including breakfast and dinner with ours. Only paid for wine and a massage.
Use ours on 4 for 1, pays for the tunnel every year for our Alps trip, have had a fourtnight all inclusive in Minorca and a week in Fuerteventura for four of us Got £600 of vouchers at the moment which will pay for a holiday later this year
I have just booked a Wild Kites and Eagles photography workshop with http://www.Wildarena.com through this clubcard voucher scheme thing. £20 of clubcard vouchers gets £80 of workshop vouchers and so I only have to pay £17 myself!!