Plus on top of that they want a caution as high as the rent, and what if you decide to move after a few months, u have to pay them again when there is an agency involved?
Normally on your contract, if you move out after couple of months, they will take the deposit, plus they would be within rights to charge you the full years rent. I had this situation with my previous landlord. After six months i decided to move on as i thought the rent was to high, plus bills were huge! I gave him 1 month noticed, and he said it was fine, and he would give me back deposit when new tennants moved in. Guess what, after i moved out i got a phone call from his agent asking for full years rent and my deposit wouldnt be given back to me. Plus the cheeky bugger used the phone and sent a bill to me for 600pln in 1 month.
Best thing is to avoid agents, and if you have to use them. Get contracts which are water tight, and have an escape clause!!
gumtree.plalso beware, alot of agents use this site and make the ad's look like normal ones;)