If you are an agent, you have heard this question from a potential buyer. If you are a buyer you have probably asked it.
A BUYER AGENCY AGREEMENT? Why should I sign this? I don't want to commit myself to one agent when I can have several of them working for me. If I sign this you wont have any incentive to work hard on my behalf.
The reality is that none of that is true.
A good experienced agent will not work under those conditions. They know that every agent has access to the same MLS listings. The good agents will however have a better knowledge of the inventory, they will know that the great ranch with 3 bedrooms, basement and a garage that looks like your dream home on paper is actually too far from the elementary school for your kids to walk. They will know that the house that is such a bargain has a tax bill that will double when you file your Property Transfer Affidavit and at that point you can no longer afford it.
Would you expect a good attorney to work for you for a month and then let you decide whether or not to pay him, of course not. You would talk to him and decide to either use his services or not up front.
It's the same with a quality REALTOR. Sit down with your potential agent and let them explain what they do and what you can expect from them. LISTEN to what they say. If you are serious about purchasing a home you will appreciate how much this person can simplify the process and remove a lot of the trepidation you are probably feeling at the start of the process. Let them go over the paperwork involved, it's not as bad as it seems. Again LISTEN.
An agent in this situation is actually going to work harder for you. As you may or may not know, agents only get paid when you close on a property. They don't get a salary or mileage or anything paid by the brokers. They actually have to pay for just about everything they use in one way or another. So they have a financial investment in you. By signing the Buyer Agency Agreement you are assuring that agent of getting paid for their efforts.
If you have several working for you, none of them are actually working for you. They wont be giving you their full attention until they are sure they are in a position to get paid. Would you want to be in that situation at work? Your boss gives you the same project as two of your coworkers. You all have to use the same tools and when the job is done your boss just decides who gets paid and who makes nothing. Would you give 100 percent under those conditions? Not after being on the wrong end of the boss's whim a few times.
Most of the time a buyer agency agreement states that the seller is paying your agents commission. If you do your homework, LISTEN to your agent and choose a good one the agreement will be a good thing for you.

www.terrylynch.com
As an investor, I often talk to Realtors in different states. As a consumer, it is a big turn off to me to have someone ask me to sign a buyer agency agreement before we look at the first house. I would be comfortable doing it after a 'test drive'.