Honestly, on items exceeding $300-$400 I would ask for a small deposit. That way you can't go wrong and if they still decide to ignore you, you just made yourself some money lol.
2012 Mercedes-Benz C250 Coupe-SOLD
1996 BMW 328is- SOLD
1998 Mercedes-Benz E430- SOLD
1990 Ford Probe Turbo- SOLD