I like swatching ink! Happy to trade for anything I don’t already have (though I might be set on blue and black for a while).
I can trade anything I have a Bottle of. Samples that are Unused may be available; they have been swatched and are a tiny bit short of 2ml but still close.
Did you know that you can compare the inks listed here with your own (i.e. only show those that the other owns that you don't) if you create an account on the site and enter your inks? You can sign up here.