I paid £7689 for my 60 plate 2.0 FR SC in October 2014. 51,000, had the winter pack (heated leathers, heated washer jets and headlight washers), bluetooth + usb and rear parking sensors. I think I got a pretty good deal given those extras and the fact it was direct a Seat dealer so it came with a years warranty, had 2 new tyres fitted, alloys refurbed and a fresh mot and service before I drove it away!
Trade in prices always seem ridiculously low to me, I know it's a bit of hassle to sell a car, but for the price difference (for the majority of cars) it seems a no brainer to go through that hassle. I had a decent spec fiat bravo as my previous car. Seat dealer that I got the
ibiza from offered me £1900 p/x. I sold it for £3250 after listing on ebay and autotrader. Took a few weeks but worth the wait for the price.
I'd agree with Big Col's estimate of £7000-£7500. If it was a 5 door version I'd be interested in taking it off your hands as I'm not enjoying going from a 5 door to 3 door, but it was a good deal and, after checking autotrader and ebay daily for months, I'm still yet to see another 2.0 FR
ibiza in my price range (under 9k) with bluetooth, usb input, rear sensors and heated seats.