I don't want people in my house, even if someone is home!! They could be casing your house for later robery! I've read several craigslist related incidents lately. If you want people to come to your house..set a table up in the garage or on the porch, do not let them in your house or to peer into your windows to see what else you have they might like!!
Also, I will never promise to hold anything for anyone..often you never hear from them again and other potential customers go elsewhere. CASH only, first come, first served. Good luck.
Mary