I'm wondering what cowboys customers means...........but after I scroll down and read more I think I understand.
I experienced it, February 2013. My customer left me with 3.5 containers furniture (he paid 30% deposit well its my mistake cos I trust him to much -my former boss was the middle person between us- on that time I was thinking I can put trust on them).
In fact by the time when the goods are almost done to pack and almost shipped, the buyer gone away without news, my former boss started talking that the customer has difficult financial issue. He tried to calmed me down by saying he will help me to find another buyer who wants those goods, again I trust him but until now I heard nothing.
for small business person like me of course its really pain in the ass to stay with 3.5 containers goods unpaid fully. I had to struggle a lot, I sale the goods retail, forcing my friends to buy piece by pieces. Even until now I still have them (1.5 containers left).
Life must goes on, business has to keep runs if not I won't able to pay my people (and their family), I become much more careful now, if somebody comes to me and buying goods for me I will really investigate him/her till detail LOL, well 50% deposit upfront sometimes can't be guarantee but at least its better than 30% deposit

LOL.
Just be more careful