Last weekend I went to a local swapmeet, and found some used CDs I like from a vendor, so I asked to buy them. The asking price was $1 a piece, (I tried to negotiate to $5 for 6 cds but the seller refused) so I paid $5 for 5 cds and left.
When I got home, and open the cds, I found that in one case, there were 2 cds!!
. Now, I would come back to return the extra cd (or give the vendor a dollar) if only I noticed what she looks like or the place she sells. There are about 800 vendors at this swapmeet, and they are moving around, so there are no way I can find her to return the cd.
So, I unintentional got exactly what I wanted (6 cds for $5)