Your best bet is Trinity United Methodist Church, located at 273 Meeting St. in Historic Downtown Charleston (www.trinityumccharleston.com). Gorgeous sanctuary and close to the best hotels and reception venues in Downtown. Church is Charleston's oldest Methodist Church. It as perfect for a church wedding.
When I was looking for a ceremony venue in Charleston last year all of the churches somewhat close to the battery charged at least $5,000 for non-members. We ended up getting married on the lawn of the Palmer House B&B. Good luck with your search & happy planning!
St. Luke's Chapel is a very popular place. Very beautiful with a center aisle for the bride to walk down. It is located on the MUSC campus near downtown Charleston. If you are having a smaller guest list, then Tidewater Chapel is worth looking into. It is located just over the bridge in Mt Pleasant. All the best to you in your planning. Jay Maxwell
Circular Church is not non-denominational! It is a United Church of Christ (UCC) Church. The cost is $2,250. St. Lukes is so, so nice, However, it is out of loop when it comes to location. If you want a Destination Wedding, it should be about location, location, location. St. Luke's is only near two reception venues and is not near any Hotels in the Historic Section of Downtown Charleston. Stay with Bethel UMC, Trinity UMC, Circular Church, and other churches which are near hotels, the better reception venues (Society Hall, Charleston Place, etc.). Book your reception venue first and then look for a Church! The better reception venues book up to two years in adance! Most churches can accomodate more than one wedding on a given Saturday!