Typical cost for wedding dress cleaning & preservation?

Daughter did hers through a higher-end dry cleaner that had a good online reputation for wedding dress cleaning/preservation, but was NOT the top of the line/most expensive option she looked at. I believe she paid about $200 for an aline ball gown with a decent train. (To pp's point, we're located in a reasonably high cost of living area near the So Cal coast in Orange County.)

I used Memories Gown Preservation...they are the ones who clean the dress if you use the kit from David's...I got the kit when it was on sale for $99.

I am super tempted to open the box and look! It is completely sealed. The part I can see looks good, but of course the dirtiest part was the hem, so who knows! Someday I'll open it.

I heard around $400, but it really depends on the dress itself and the service you use.