I normally import the spares from either England of Singapore. I contact their interest groups over there and they normally ship it to me for a small profit. You can check out:
RAV4 World - Favorite Links
They have a lot of tips and how-to-do advice for the vehicle. This is the UK website. Not bad for an information and parts source.
Rav4 Expedition Singapore
As for the Singapore website above, I normally take a look at the pictures and get advice from them where to get the parts. Normally I am directed to either ebay to get them. From ebay, the seller could be from any country. It is not that bad.
All parts require custom clearance. This is a difficult part to do during the whole process. For some small parts (springs, plugs, mirrors, I normally get somebody to buy them back for me when they are overseas) - faster and no hassle of custom clearance