This topic was last updated on Oct 30. But the rate of USD is valid for 24 hours. I think the rate of USD should be updated here every day.  Because we who trade USD, trade on any website. The website update the rate of USD every day, even every moment. If you also update it here, it will be convenient for the members to compare and sell wherever they get higher rates. 

You can add Roket to the payment method. Because there are two types of Roket accounts.
 1. When "Cash in" will deduct the charge.
 2. If cash out, charge will be deducted.

There are some old Roket accounts that will deduct the charge when Cash in. This system charges 9 Taka per thousand and Cash out free from the booth. As a result, I think all these customers will prefer to take payment on Roket.