Gigabyte has quite a few models with USB 3.0. Check if any one is available. BTW, you can now go for a mobo without USB 3.0 and later purchase a separate PCI card or bracket for USB 3.0.
Regarding online purchase, I have purchased from quite a few online shops, Lynx, TechShop, ITWares, Flipkart and of course ebay - no trouble getting the same in Patna and that includes heavy products like monitor and cabinet also. Only thing is that if you purchase through Bank Transfer (EFT) make sure ready stock is available.