Biggen is right, snow tax counts for a lot now. You're alomost into 's'reg TD5 territory (albeit ebay unwarranted etc) for the price the dealer is asking. Best bet is to find a friendly Disco owner in your area who is prepared to go and look at private sale vehicles with you, you should get a similar age/spec/condition for a little over half the price, just make sure you hold some cash back for bits and bobs.