There is a website that has all information related to Ghanaian weddings. From wedding gowns to cost of weddings to wedding planners and everything you will ever need
There is this website that have very nice wedding dresses you should check it out. you can pay for the dress through western union http://www.dressesshop.com/tags/Wedding-Gowns-In-Ghana-And-Prices
you can buy wedding dress in Accra at Makola Market.
But you can also get some at a affordable price on http://tonaton.com
there are good dresses with good prices there