I was offered a deal at a discounted price and then found that this was the hotels standard price anyway so the discount offered by booking.com was purely fictional. What's more booking.com then take a cut out of the hotels charge
You may think you're getting a discount using booking sites but all it does is drive the hotels rates up to cover the fee that the booking sites take from them. Best tip use booking sites to find the best deal then book direct through the hotels own website - it'll be the same price.