Unable to purchase Lux Anima replicas?

[Pence]

I thougt the zeta replica was added with 3.15, with the implemention of the anima.
I couldn't find a Lux replica in any database so it will probably come with the next relic in 4.15 or maybe 4.1

IIRC this is correct, in my head it was done in an attempt to get players to keep their completed relic to trade in for the start of the 3.x relics. That said, you can just get a replica 'Completed Anima Weapon Replica' and do the primals. Would take 30mins if that.