Feeling really disapointed on the maternity wear front!?

ok im going to a wedding in mid may and i need to buy a dress when i get paid at the end of this month and when i go to the wedding ill be like 36 weeks pregnant. i cant for the life of me find a decent dress to wear, theyre either to dated looking, the material is plain or there made of jersey material which i cant stand or theyre frumpy and quite frank boring, or if you do find a nice one its like 200 quid and i aint forkin out 200 quid on a dress ill only wear once and i wont need again. i would make one my self but i do not have a dummy/manequin to work with and nor have i a pattern to work from (although pattern wouldnt be a prob if i had a dummy i can do my own pattern or work on dummy) nor do i have the time to do it either or the space or energy. does any body know where i can find some really nice dresses for maternity that are fairly cheap (i dont mind going up to about say 80 quid for the dress) as i am starting to get quite frustrated that people who design maternity clothes dont take in to consideration that we might actually want to look good rather that a big fat frump!!! i dunno maybe theirs a market there, ill make maternity clothes that actually look good are cheap and have a wide variety of style shapes and colours rather than the bland crrap out there now!!