Bridesmaid dress headache! Where can I find dark purple satin bridesmaid dresses for under £100? I need 5!

How about these?

frilled tea dress

bustier dress

satin dress

chiffon dress

Any evening dress shops near you? - I have a dark purple satin evening dress (floor length, Purple, Bias Cut, with chiffon detailing at the neckline) that I bought for £95 a few years ago from the shop on the plain roundabout in Oxford. Nearly went there to look for dresses, but took the view that living in Devon and having only a "toy" car to mooch around in, I'd probably not save much money buying them in Oxford over having them made.

I am having dark purple too and I have found a lovely bridesmaids dress from 'Occasions' in Debenhams - see link. £75.

http://www.debenhams.com/webapp/wcs/stores/servlet/prod_10001_10001_008010512553_-1?breadcrumb=Home%7EWomen%7EOccasion+%26amp%3B+evening+wear

Its not silk but it does sit well and they have sizes from 6 - 18 in my local store