I've got a nice picture of a chart from someone else on the message board that compares Level Wealth Scroll 5% of WBL % of WBL Cost to level purely with scrolls % WBL to level with scrolls.
It basically shows that you can (cheaply) end encounters with 1 scroll, get gold for scrolls, and use the XP from the scroll encounters to level all the way to ECL20. Basically, if you allow scrolls in your game, there's little need for traditional adventuring or even being a caster. Just be a commoner with cross ranks in UMD.
@ me on our discord (PBMC) if you want to type up the chart with the correct formatting here.
