Rates of certain products such as currency notes are heavily dependent on demand and supply in the local market. Other products such as forex cards, wire transfers, and demand drafts do not have a physical footprint and therefore they are not dependent on demand and supply in the local market.
The demand for foreign currency in India generally exceeds the supply and as a result, foreign currency notes are often available at much worse rates than alternatives such as forex cards. At times these products are not available at all. Apart from this, the rates of different products vary since our channel partners provide us with different rates for different products.