paid domains

I am considering offering a paid feature on RobbiesBlog.com to list your domain name for sale either on the fixed side bar or in a posts for a fixed period of time i.e - 1 week or 5 days etc. cost would be minimal - something like $3 -$5 but only one name per person and maximum of 10 names...

I am considering offering a paid feature on RobbiesBlog.com to list your domain name for sale either on the fixed side bar or in a posts for a fixed period of time i.e - 1 week or 5 days etc. cost would be minimal - something like $3 -$5 but only one name per person and maximum of 10 names...