Real estate brokers charge 2% and generally work with the vendor and buyer. Generaly there are no government controls on agents fees but in general is 2 per cent plus VAT. The real estate agent fee is not included in the purchase price .
For this reason having some kind of advisor on your side is not a bad idea.
It is always imperative to check in advance how much you are required to pay. Have in mind that real estate agents are service providers and if you are told that they will not get commission that means that either they are including their fee in the buying price or that you are doing something wrong .
On the other side do not bargain to much for the commission fee with your agent having in mind that real estate agent that can not defend his service fee is not capable to fight for your rights against the vendor.