Oooo, have you seen that?

I think it is very very interesting, 45 RP for one WOF. Tempting...
I must recalculate what is better, buying WOFs that way or using RP to buy WOFs during ROLL.

For 4500 RP you may have 100 WOFs. Using 4500RP bonus which gives 5WOF/ROLL, you must roll 20 times... So I think at the end it is better buy WOFs directly - doing 20 rolls per day is not very comfortable.