If you're looking for the OEM amber ones, they're tough to find, and I don't think people would just do a trade. You can always get some translucent amber paint and paint yours.
truth. you'll have to forgive me im fairly new to the nissan game...i had been playing in the land of germany (VW) prior to buying my b13 so im not up to snuff on EVERYTHING yet lol. so from the sounds of it, the amber ones are rare and hold more value?
The amber ones never came standard on cars in the US, so anyone that has them from somewhere overseas. I have seen them for sale occasionally in the $50 range.