This is good advice. A little sandpaper and beeswax will make a Green River handle more comfortable, pretty, and durable.
As for how to contact
Daado
you could pay for a membership here which would allow you to send him a private message. He might also respond to this thread, since he has been tagged a few times. If nothing else, you could use the search function and reply to one of his threads, asking to discuss the possibility of an order.
Make no mistake, I love Green River knives and happily recommend them. I just wanted to make sure you had all of the facts. I have bought, used, and discarded many knives of lesser quality that sold for a higher price. You could buy 5 of their knives for about $100 and modify them as you see fit, which is what many of us do.
Edit: you might also look up Brisa Knives and Kellam Knives for good quality knives of Scandinavian origin within your price range. Many of their models also come with a sheath. Both brands use good steel, with Kellam primarily using carbon steel.