Just wanted to add a few details about how to go from Living Economy to Enhanced Economy:
EDIT: Sorry left out steps. There may be more or less instructions.
-If you are using LE-items you can/should use its menu to revert back to vanilla prices before you remove it. Look at the LE readme's alternate prices section.
Note that there is no harm in continuing with the prices set by Living Economy. If you like that pricing scheme better than the vanilla, just don't revert back before uninstalling LE. All of Enhanched Economy's price adjustments are using the current prices as a base, so this will work flawlessly. Just make sure that you're not inside any shop, as LE-items may then have altered the prices specifically for that shop.
From Living Economy:
This mod changes the barter gold amount on EVERY NPC in the game. Even if you just disable the plugin, those changes will remain for any games that were saved with this plug-in active. To properly uninstall this mod open the customization menu by typing "startquest cflemenu" (no quotes) in the console and select "Disable Mod". You DON'T have to immediately stop playing. Everything should work as if the plugin was actually disabled. Once you actually disable the plugin there is a VERY SMALL possibility that any investments you made while using this mod will be forgotten (none after 3.0).
This isn't necessary if you switch to Enhanced Economy. I sort of expected that many players would forget doing this, so when Enhanced Economy starts up for the first time, it reset the barter gold of all vanilla + SI merchants, which actually is better than LE's reset mechanism which only works for vanilla merchants.
Living Economy - Items:
You should save the game outside any shop to ensure the prices are correct before uninstalling this mod. Keep in mind prices are similarly set permanently, so once you remove LE Items, the prices won't change unless an external price changing plugin is added after LE Items removal.
Yes, this one is really important. If you don't do this, the prices will be schewed based on this specific merchant's pricing therafter. This is really the only important thing to do when switching from LE to Enhanced Economy.
...I guess I should add a section about converting from LE in Enhanced Economy's readme