Gown Preservation

I want to get my dressed cleaned/preserved after my wedding, however am very worried about the process due the the delicate beedwork and embroidery that covers my entire gown. I`ve read that certain solvents used in dry-cleaning can ruin/dissove the beading of my dress. I`ve done a little research on-line and have found prices ranging from a flat fee of $99 to $399-$699 depending on the gown. I paid $649 for the gown and am horrified at the thought that I would be expected to pay that much just to get it cleaned and boxed. Can anyone recommed a company that does a great job with out charging a fortune?