Hello and welcome. HDH looks a very nice van, and for around £2000 is the top end to pay really. Although the door looks a poor fit.
Carnt find the site you mention, classimap.co.uk, do you have a link to the advert. We have SOG listed in our register but no pictures. As mentioned £7500 is very high, the van would ahve to be like new for that money. Joining the club also gives you acccess to club spares and the magazine.
Membership details here,
http://www.vauxhallviva.com/?page_id=337A HA van would handle a the buisness you have in mind no problem. Plenty of space in the back, easy to drive, economical, reliable, especially when fitted with elec ignition. Good luck and keep us informed if you get one.
Peter
Reading between the lines, dangerous if your waiting for a train.