So my doubt is, transaction fees is calculated on percentage basis or how. If I transact of say $10 then also fees will be in the range of $0.45 - $0.60?
The fee you pay for every trade is the sum of the trade fee and the transaction fee.
The trade fee is a percentage of the trade volume. So the bigger amount you trade, the more you have to pay as trade fee.
The transaction fee depends on network state and doesn't depend on the trade volume.