Ravenfly27

Hi, Recently brought my first jumpsuit and after 2 months of waiting it arrived but unfortunately it is too tight round the torso. I asked the company i ordered the suit with if they could adjust this slightly and they advised it would cost £350. The suit was £470 so as i am quite new to the sport, was wondering is this a reasonable price for the adjustment? Also is there any other places i should look to get this adjusted. Thanks for all the help Blue Skies