Very difficult to say as so few crop up for sale. The similarly sized System 800 monitor, which has closely related drivers can fetch maybe £250 to £450 a pair, it varies. At a guess I'd say up to £500 would possibly be right.
novafidelity x40 music server/pre/dac, Arcam A39, roksan k3 power amp,Monitor Audio Monitor 50, Dali spektor 1, van damme interconnects and speaker cable, roskan k3 CD player
Interesting speakers in Hastings. Wharfedale Super 8 RSDD in column cabinets. High impedance, high sensitivity, full range 8 inch drivers.
https://www.ebay.co.uk/itm/Pair-of-V...EAAOSw3EZa4bO~