Well I'm away until Friday with work but the wheels are less than 6 months old and as far as I am aware they should be in excellent condition.
This pair of 18" Ixions with 7mm of tread went for just over £1000 on Ebay earlier this year
http://www.ebay.co.uk/itm/2812993396...84.m1555.l2649
Looking at prices on here and elsewhere the current secondhand selling price seems to be in the £700 - £850 range (collected) so I'm happy to consider sensible offers.
I'm based in Birmingham if that helps...