A Voice in the Warp
As per house rules, Parry comes as a basic skill (ie. you roll half WS to parry).
You can purchase/upgrade Parry alongside Dodge, starting from when you can purchase dodge, at the same price.
If at level 1, you can purchase Dodge with 100xp, go ahead. You also have the option to purchase the skill Parry at the same price
If at level 3, you can purchase Dodge +10 with 100xp, you can also purchase Parry +10 with 100xp.
If at level 5, you can purchase Dodge +20 with 100xp, you can also purchase Parry +20 with 100xp, if
you’ve got the prereq (Parry +10, of course).
The cost of dodge and parry will always be the same (100 = 100, 200 = 200 etc.) and the bonus training will always be available at the same level, for both.