Second tier items in bio and arch like nextor crystals and genetic anomaly are a pain in the rear to gather, so they seem to sell for good prices on my server. Some arch artifact fragments sell very well, others are a loss- you'd have to research that on your server. Slicing lock boxes under 400 make money, but slowly. The nice thing is when you crit on those, it is usually worth selling for a good price. Crafting mid level Augs, can be profitable, but schematics for them are not plentiful.