same as you, i spent a few days earlier this year at bca, only to see cars going thru at silly prices, some even appeared on ebay afterwards with a grand mark upi decided the auction wasn't the best source for an a2.
sorry guys it was good being here but yesterday i gave up on my search for an A2 tdi, i test drove a new shape A180 diesel and had to have it, private sale, trade money with a few toys including panoramic roof, i know it's not got the personality but it's quick enough, frugal and should be reliable, just right for the school runs it's mainly got to do.
there just aren't enough nice audi's for sale and plenty are hugely over priced, good if you have one but bad if you don't, i doubt the merc will hold it's value as well but i just couldn't wait any longer.
if it doesn't work out "i'll be back" as arnie says.