If you have been working with an agent for some time then you obviously have been receiving top notch service.,why would you want to venture out on your own now? Did you sign an Exclusive Buyer Agency Contract? Even if you didn't , your agent has been there with exceptional service and I feel you have entered into a relationship of trust and respect . Your agent is there is guide you and use his/her expertise on the market, the property location, comparables and overall quality of the homes you are touring - to find you the best possible home for the best price. Absolutely use your agent to assist with this purchase, especially with a FSBO - it's even more important as many "by owner" homes are priced much higher than the current market. Have your agent make the contact with the seller and be sure the seller understands you want buyer representation. .