The following is a list of vendors that I have purchased at least something from ...if not lots of somethings.

Vans Aircraft The kit manufacturer
iflyrv10 RV10 Billet trim brackets
 Cleaveland Aircraft Tool  Static ports and plumbing, tie downs, 
 SkyGeek  Wire (so far)
 Airparts Inc  Nuts, Bolts, Rivets, 
Aircraft Spruce Various pieces and parts and some tools
Wicks (these people build organs too) A few items I have had to order from here...shipping is slower to the Carolinas and more costly