Overseas Wedding Gown Shipping

I`m having my wedding on june and I didn`t deside how to buy my wedding gown yet because the shops in my country is very expensive and I can`t afford it. I wanted to ask if buying the dress online will be good or there will be problems like shipping delay and I`m also scared that the dress won`t be like the photo or it won`t fit. I`m also looking for something under 200$ and I didn`t find anything nice yet