Of course you can ask to see the MLS sheet, many agents give a copy of the full sheet, that printed for the agent regardless, and if any bonus is offered this must be disclosed to you the buyer. However, be aware, that the commission is not 6% usually to the buyers agent, the listing broker may have a listing contract for a set percentage level, but the bank in the short sale may require a lower commission to accept the short sale. Very common today is for listing agents to note to agents that any commission reduced by the bank will be split 50/50 between listing and buyers brokers. When signing your buyer agency agreement, you were able to negotiate what your agent was willing to accept by way of payment, either from you, or from the listing broker. In some states agents require a retainer fee, in advance which goes toward the total commission paid at settlement to prevent buyers using their services and then dumping them to negotiate a better deal. If you don't go to settlement with the agent you lose your retainer fee.