I don't think there's anything wrong with not 
selling to previous "drop outs."

If someone demonstrates an inability to follow 
through with a transaction -- whether it's because 
they don't know how to properly manage their 
finances, or they simply aren't mature enough to 
keep their word -- then I don't see how they can 
expect to be taken seriously the next time around.

Many people do have legitimate reasons for not 
being able to complete a transaction. 
Unfortunately, untrue excuses have become so 
common that it's nearly impossible to tell a 
"real" excuse from a faked one. If everyone who 
told me there was a death in the family was 
telling the truth, then the population of the US 
would be in serious trouble. I'm sure some -- 
maybe many -- of the people who told me this 
weren't lying. But how do I know which ones? 
Sadly, now anyone who offers an excuse instead of 
payment, even if it's legitimate and truthful, 
must be prepared to assume that the seller will 
always doubt them, and will probably be reluctant 
to sell to them in the future. 

It's unfair, but it's the way of the world. Trust 
on the internet is virtually nonexistant thanks to 
those crying wolf.

Wow, this is longer than I meant it to be.  Oops!

__
The Lizzard