Having recently discovered Boux Avenue's lingerie range & really liking it, I was having a browse of the site when I came across a FAB multi buy offer on knickers. Knickers priced at £6 -£7 you can buy in mix n match multiples for higher discounts ie 3 for £12, 5 for £18 or if you buy 7 pairs you get them for half price at £21 PLUS they are offering FREE Delivery on ALL orders.
PLUS they say their upto 70% off Sale has finished but it doesn't appear to be, they have just mixed it back in with the general sections, so if you search low - high price you'll find bra's down from £26 to £8, knickers from £2 & so on, admittedly sizes are a little hit & miss but with the FREE Delivery the whole site is worth a browse. Link goes to knicker offer, will pop other links in 1st / 2nd posts.