I'm willing to look at trades of most sizes, but I don't want to trade less than ~$5 of cards. 

I can ship in either envelopes or bubble mailers.  I expect the shipping method to be matched.  Tracking is available, but only for trades $25 and up.

I prefer to trade standard cards for other standard cards and modern staples for other modern staples. Cards that don't see regular play in either standard or modern I'm not picky about.