Ammulu Aunty Boothu Kathalu

If your market maker has a strong relationship with a line of banks and can aggregate, say, 12 banks' price quotes, then the brokerage firm will be able to pass the average bid and ask prices on to its retail customers. Even after slightly widening the spread to account for profit, the dealer can pass a more competitive spread on to you than competitors that are not well capitalized.
 If you are dealing with a broker that can offer guaranteed liquidity at attractive spreads, this may be what you should look for. On the other hand, you might want to pay a fixed pip spread if you know you are getting at-the-money executions every time you trade. Slippage, which occurs when your trade is executed away from the price you were offered, is a cost that you do not want to bear.
 In the case of a commission broker, whether you should pay a small commission depends on what else the broker is offering. For example, suppose your broker charges you a small commission, usually in the order of two-tenths of one pip, or about $2.50 to $3 per 100,000 unit trade, but in exchange offers you access to a proprietary software platform that is superior to most online brokers' platforms, or some other benefit. In this case, it may be worth paying the small commission for this additional service.