There are now three tiers of HP Restore. Tier 3, Tier 5, and Tier 7.

Tier 3 heals 100 HP and can be stacked with itself or other tiers of HP Restore.

Tier 5 heals 200 HP.

Tier 7 heals 300 HP and costs two property slots.

Party Effect items heal half of their value, including bonuses from things such as Chemist.

The Eidolon Heal property, found on things such as Dragon's Mane (easily harvestable for you now) multiplies the healing factor by 5 but is only applicable to Eidolons in Eidolon form.