Pictures are key (both here and on the bay). Good pics and well thought out ad text can be difference makers. I also like the idea of an absurd reserve for unusual pieces (never done it myself, but it makes good sense so you don't get caught on a bad day).
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Bikes: 1996 Eddy Merckx Titanium EX, 1989/90 Colnago Super(issimo?) Piu(?), 1990 Concorde Aquila(hit by car while riding), others in build queue "when I get the time"