Yes, I’ve read that thread. I’m not crafting them to be scrolls. I want to use them in Spell Shops. It’s basically a shop that sells buffs. You can see the explanation of the Spell Shop in that thread too.
Good to know, since I have been confused with the scroll. But I think people in a party still prefer a Priest over party buff, since they may need someone to manage their HP. Perhaps there will be demand for PUG PvP, as you don’t know what kind of Cleric on your side.
I didn’t know that it was possible to sell the buff itself through the Spell Shop, that is neat!
About blessing, I decided to go with Monstrance, because the debuff is affected by my SPR and will get better in late game, while Blessing has a fixed value.
@Indeed My build is leaning towards PvE side. I think healing won’t be too much of a problem. Although I went Krivis on CBT1, I found that Heal recovers plenty just the way it is.
The buffs that can be sold are very limited though. I think only buffs that require items can be sold(Aspersion uses Holy Water for example).
I guess that from now we need more info to improve our builds. My Pardoner won’t be my main char, but I wanna see how my chars will help each other.
The best thing is, I’ve read somewhere that when the spell shop is opened, you can logout and play your other characters and still have the shop open. I don’t if that’s true though but it will be great if it is, huh? It’s confirmed that the shop remains open when you logout, but the “playing other character” part im not too sure. 
Wow, that will be sweet! 
For a while I had two accounts on RO just because of that.
