I think its the person who emailed you who is 
being too paranoid.
too bad for him. It seems like overkill if they 
wouldn't outbid someone with no feedback ever!
..I have bid against someone with no feedback 
before and Im not the type of paranoid goit who 
thinks that whenever I bid the seller is out to 
get me and shill every last dime from my pocket. 

For one thing, Im not going to let anyone shill 
me. 
I have a set price in mind when I bid that Im not 
going to go over. I lose a lot of auctions but Im 
guaranteed im not shilled into infinity. If the 
price keeps rising until my max bid and I lose, 
so what. I was gonna spend that much anyway. If 
its less then I expected Im pretty happy.

For the second thing
  
Obviously noone can avoid getting newbies bidding 
on their stuff. if other people are going to be 
overly suspicious then its their loss. Caution is 
one thing...being a dork and accusing someone of 
unfair business practice without hard evidence is 
another all together.

Your feedback if youve sold anything in the past 
should help validate you. It sucks though that 
now you have to feel all paranoid because someone 
else has a problem.

Pale