I had my mums property on the market for over 2 years with Yopa in Torquay. I paid up front for Yopa to do the viewings and sell the property in that time it changed the selling agent four times. In the end I ended up going with a local agent and had three people wanting it. I would not recommend going with any agent wanting money up front because they have had your money and are not really fussed if they sell or not.