Complaint Review: co-operative consignment

I was looking on craigslist and i found a popup camper i wanted to purchase... the person who answered the listing said they were out of town for there daughters wedding and they needed to sell the camper to have money for the wedding.  they requested i go thru co-operative cosignment online services to purchase the item.. my husband never heard of them and told me to go on bbb.  i did and could not find this company.. i then went to the internet and found a website that said that this was a rip off and that they used and excuse that they were out of town and were at there daughters wedding, so they were using the co-op to get there money.  i thought it was ironic that there daughter was having a wedding  too....