Talk:Trading/@comment-74.98.163.123-20180129193040/@comment-24398037-20180203104719

You probably want to run some fissure missions (with relics, which you have to farm separately) and stock up on prime parts (You can get a small amount of plat per each, sometimes 100+ for particularly rare ones.)  Otherwise, riven mods (which you have a chance to get once per day from completing all 3 sorties) can go for a lot of plat, too.