Which are rather demanding in time and effort as you need to form up fireteam and be high enough in LL. Nopt to mention it is not 100% drop from what I can gather. Meanwhile masterworkiong the armour is something you would like to do as it is unlocking more mod slots and energy. Not to mention the cost as pointed by OP is currently to prohibitive to obtain mats by simply buying them and therefore it could be cut out.