At £313, this is right at the top of your comparable market: equal to the 75th-percentile asking price, so it is fair only if the example is especially clean and fully tested—not a bargain. With condition unspecified, I’d want the seller to demonstrate both channels, all inputs, the phono stage, controls, and quiet operation before paying the upper-market figure.
The VA-100 Evolution remains a desirable British integrated, offering a smooth, musical presentation, useful analogue connectivity, and a capable MOSFET output stage around 50 watts per channel. It can sound spacious and controlled, with particularly good line-level performance and an excellent phono section. Age makes service history meaningful: intermittent channels, hum, noisy input switching, and tired solder joints or capacitors are worth checking. A tidy, original unit with its manual and confirmed recent servicing could justify £313; otherwise, negotiating closer to the £239 median would be sensible.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.