We used to be able to source and sell factory new trigger packs, but FN hasn't released any to the market since 2019.
Now our trigger packs come from parting out complete rifles. This has caused the price to go up, sorry.
Used trigger packs are inspected, cleaned, and serviced by a gunsmith who has specialized in PS90 triggers for more that 15 years. If the pack has an abnormally stiff main spring it is replaced with a normal main spring. Our used packs have a marginally better trigger feel than our new packs.