I would not only question who you work with but what their worth is to you. Some key things that you need to know..
1. Sounds like you are a buyer, so you should know that the buyer's agent has to have you sign a buyer broker, the game changed last year but did it.. The offer is still typically (100% of my transactions since August 17th last year) asking for my buyer agent commission to be paid in the agreement.. And this market 100% of the sellers have paid it (my market). So 25K is really not coming out of your pocket unless your market is different.
2. The agent is the person who will have all the data, when you do comps are they on Zillow or Redfin? That has great data, but does it have sniper-style data like the MLS? Zillow and Redfin give a buyer the 10K-20K foot view of the comps, the granular view is the MLS. Does your agent know how to do that and pull the right comps to get their value to 25K commission? I would be asking them to that info in detail for you, and all of the properties you offer on.
3. Contracts: do you have 6 days a week access to attorneys on staff who can answer your questions from a legal standpoint? You can get the contract from any agent and write it yourself, but if the seller is trying to take that 3% EMD are you able to call a legal hotline to ask questions to attorneys that know the contract and do it for FREE.. Not pay your attorney $300-$600 an hour to review the contract they do not work with that much? A licensed agent with the California Association of Realtors does have access.. You would too if you work with one..
4. The big one... Negotiation, can you get huge price reduction from the seller on concessions or on the purchase price.. My team and I have gotten (just the other day) a house $1.6M reduced down to $1.4M 30 days on the market, a property 68 days on the market reduced to $100K, and then another $24K in closing costs. The list goes on with the negotiations, and saying that you'll work with the agent in a dual agency role to get them to throw their commission into play for the seller to reduce from 1M to $975,000 is not that great when you can work with an agent that can get you a house for $925K and $20K back at closing while you are paying them $25K (typically not though).
5. The last one that I would throw out is inspection, disclosures, and title challenges. There was a title issue with someone doing an FSBO with a lender of mine that I work with at lot. The seller was selling to the tenant living in the property. The tenant knows some property line issues, the seller did know a little bit about it, but not enough. They got into escrow, and then the tenant started to create a real challenge for the seller and ended up taking them to court for performance/lot line issues on the property. This tied up the property in a legal battle between the seller, buyer, and lender for a long time and cost the seller $200-$250K in damages.
Know who you are working with
Great points @Bruce Lynn