For wedding dresses packages around £100 - £150 are pretty standard, (although mine are included - jsut because im nice like that
)
For Bridesmaids the larger stores do packages like that, but maybe they might not need altering???
I have a price list per dress type so £20 a hem £30 a corset and so on for bridesmaids - its just simpler for a bride and less costs.
what your best doing if your not tied in to the other BM dresses, is looking at the Olivia Mae range letting me know which ones you like i can tell you if i have them or need to get them in for you. then book an appoitment then its not a wasted journey.
I can also store the dresses for you untill needed.
Also try Kelsey Rose - i should be getting that collection in next March! they do really funky colours!!
Hope that info helps my website is www.foreternitybridal.co.uk
drop me a pm or email if you need anymore advice.
xx