I've got two versions of "Special Deal on Entertainment Provisions" available to me now in the Bertreka Nebula. One is white/common, one is blue/rare.
Both take an hour. The rare offers very slightly improved rewards (+11 Trade XP, +43 Expertise, +50 Skill Points, no additional Commodities), but requires 1500 GPL to start, as opposed to the common version's 250 GPL cost.
Paying in six times the entry fee for maybe 10% more points seems off to me, unless there's some other benefit I'm not seeing (I checked to see if it critted more easily; it didn't).
Yeah, the REAL reward for this is only available on a crit. you get a holographic entertainer doff. the quality of the holo is dependant on the quality of the mission. So for the rare mission you get a blue quality doff.
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My character Tsin'xing
There as 4 levels of this assignment
Common, Uncommon, Rare and Very Rare, if you manage to crit the assignment you get a corrisponding Entertainment Hologram Doff out of it
EDIT - beat me to it while typing lol, also the assignment is on a 7 day cooldown after completion
Each one egts unlocked at the corrisponding trade rank