Friend is selling a flat thro Purple bricks,, so far its been 7 months, not even exchanged. Thing is, when you sign up, you either pay up front, or defer payment via a credit company (aka Close Brothers), either way they have their money, whether it sells or not, so if a sale is agreed, so what if it takes a year, they don'tcare. Yes you save money, but if you are in a chain, or want the money soon ish, then I wouldn't bother. Also PB charge extra if you want them to do the viewings. We've just refurbed a house (its what we do) and put it on with the agent we bought it from for, 1% (haggled a bit), anyway its sold in 4 days, survey done within a week of the viewing. We bought the house in 3 weeks, viewing to completion, you can't do this with PB. Tread carefully, all that glitters is not gold.