A realtor can help both buyers and sellers in a real estate transaction. As a buyer's agent, a realtor represents the interests of the purchaser and helps them find a suitable home, negotiate the purchase price, and navigate the buying process. On the other hand, as a seller's agent, a realtor represents the interests of the seller and helps them market and sell their property. In some cases, a realtor may act as a dual agent, representing both the buyer and the seller in the same transaction. However, this can be a complex arrangement, and buyers and sellers should be aware of the potential conflicts of interest that can arise in such situations. It is important to note that realtor services are usually paid for by the seller, as a commission based on the sale price of the property.