i had already started a thread on this but for some reason i can't find it anymore.
anyway you know if you have a budget for each person's present say £20 but with things like 3 for 2 on in boots you can get 3 presents for £40 instead of £60, do you buy extra presents to make up the extra £20 or think well they have presents in value of £20 they just didn't cost that much.
i hope my babble makes sense!!