It depends. Are you in the U.S? If so(and if you can get all the particulars of the drum, i.e. shell material, size, finish, hardware options), maybe call some place like Drums on Sale, Americas Percussion Store
and ask them for a quote.
Before I expanded my DW
kit, I check at a locally owned large music store and at Guitar Center and was able to save about 10% by getting the extra drums for my set from drums on sale.
After all, what's a phone call cost?