A few points:

1) Perhaps she _purchased_ them from taro because 
she liked them?  Ever thought about that?

2) Have you any idea what two cels she also just 
got from taro?  It's no surprise that she would 
sell one of the Tamahome's to get a little money 
back.

3) Regarding profit... is she selling them for 
higher than the original purchase price? Her price
was not listed in the post.  Why were you so quick
to judge so harshly?

I've had my own experiences where I've purchased
several cels that I really liked... then found 
another that I liked even more, but was more
expensive.  So when I recieved the first cels I 
had to turn around and sell them to fund the last
purchase.  Might as well give someone who missed
it the first time around a chance at it.

Finally, I think rather highly of Marisa.  She's 
one of the nicest collectors that I've had the
pleasure of meeting, and surely doesn't appear to
be the type who wants to rip people off.  

Why not give her credit where credit is due,
and e-mail her privately and _politely_ ask what
you stated in your post.  It gets a whole lot
more accomplished then becoming an anonymous
flamer.  Not to mention preserving your integrity
and honor.  ^_^

Best Wishes,
Jenny  (yes, I have a real name  ^_~)
~Kenshin no Miko~