If you are buying a dress from there, find someone else to do the alterations! My alterations for my dress were 50% of the cost of the dress. The alterations for a very simple bridesmaid dress were also about 50% of the dress.
The quality of the alterations were great, Moni does do a great job, but not worth the money at all. Once you buy the dresses from them, the customer services goes down hill from there.
*Trying to be vague but if you have any questions PM me for more details.