True, I have had some cracking buys like the 1897 HT with good lustre for a tenner! I tend to put in a tentative bid to get it to the top of the list, then snipe a realistic bid late, though it will be less than Declan has for his on EBay at present for this coin. With a real rarity that I really want, I may bid high at the start, to discourage some one else becoming 'high bidder' and starting off EBay negotiations. The 1875 cannonball that I won last month for 99p also had a late snipe well into three figures, but clearly no one else spotted it. One thing is for sure, posting every rarity here prior to sale may help the seller but would remove any chance of a bargain.
Bernie, as some here know, if I really want a coin I have no issues with paying dealer prices, and more. But a bargain is always nice.
Post them after the auction has ended, and they are safely in the mail, for the reasons already discussed on this forum.
Jerry