I don't think lowering the price of capitals will attract more new player to gallia RP. Too many caps won't help revive gallia RP. If the faction is newbie-friendly and has an effective propaganda campaign, it will get more new recruits. If people want to RP in that faction, any ship of the faction will do. So I don't think there is any necessity in lowering the price of GRN caps.
Besides, I think the price should be decided according to the overall performance of the ship. I think the Valor is a powerful cap, and current price is sensible.