He used to have a store here, but that seems to be gone now.  You could try sending him a Sitemail, but unless he still checks in here, he won't see that he has a message unless he knew to turn on Sitemail notification. Which many don't do.

However, I've had success in contacting people by leaving a post in one of their gallery images.  That is automatically turned on and they will get notification unless they have turned off that feature, which most don't.

http://renderosity.com/mod/gallery/index.php?image_id=617280&user_id=4378&member&np

So give it a try. Send a Sitemail,  and then make a post in the above image and ask him to please check his site mail.  I can't promise it will work, but it's worth a try :)

EDIT:

 

Ok, it seems that he still does have a store here. A few items still in it.

http://market.renderosity.com/homepage.php?userid=4378

 

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi