I just noticed these in the broker last night. Do these mods require anything extra or do they attach just like regular mods? I don't want to drop 20 million on a mod that I can't equip.
Use your money to buy the plan better, 20 millions sound too expensive for 15 red exobytes and FEV, since is the base of the mod required, or ask to crafters.
As already mentioned, you never see the plans in the broker. In fact, I didn't even think they could be traded until I just read it here. 20 million is a lot for a mod, but I'll only buy one each time I get a new T5 piece or maybe for my 84 PvP gear. You also get a decent amount of your money back after you recover bytes from the mod you're replacing.