FIRST BEFORE LAUNCHING THE SERVER:
/kill @e[type=item] //I recommend setting a clock for this

I DO NOT RECOMEND ANY ONE WHO DOESN'T HAVE ANY COMMANDBLOCK/REDSTONE EXPIERENCE TO DO THIS! (Alternetivly download the world from the mod description when release it)
claim 150 blocks using the main_coin and disable block placing/breaking and mob spawning
run:
/scoreboard objectives add EMCCoins dummy
/scoreboard objectives setdisplay sidebar EMCCoins (Although if you'd like change it to any display)
build:
You'd need some shops around the center spawn of the world. Use these commands to sell and buy(using command blocks):
in a chain:
/testfor @p[r=3,score_EMCCoins_min=#]   //change for cost and r is range
compartator to:
/scoreboard players remove @p[r=3] EMCCoins # //same cost and range
repeater to:
/give @p[r=3] mod:item //range and item

then watch: https://youtu.be/vZAgU_DmQO8
to find out to complete this (theres a thing with the repeater, so the command block will have to reset.


ideas on what to sell:
Mowzies mobs secret Geomancy Pendent
Creative only items
End Crystals(look below)


Make sure your players get to set up their own shops, one of the reasons the Thaumcraft Quest line doesnt go far is because I wanted
the players to make their own items to sell. Try to make a town or a building near center spawn.
If players want to sell somthing:
/scoreboard objectives add (PlayerName) dummy
set up a normal shop like above but before the second command put:
/scoreboard players add @e[type=armor_stand,r=3] (PlayerName) # //cost
then make a place where the player can press buttons on a command block to withdraw(Near the armor stand):
/testfor @e[type=armor_stand,r=4,(PlayerName)=100]
/scoreboard players add (PlayerName) EMCCoins 100
/scoreboard players remove @e[type=armor_stand,score_(Playername)_min=100] EMCCoins 100 //with all these commands im making a 100 coin minnimum withdraw, feel free to change it!

This mod pack does have craft tweaker, I currently disabled the following: 
Dungeon Tactics Iron, Gold, and Silver Shields (Spartan Weaponry already has these)
Atum Radient Beacon
fastladder Teleport Pad (Disabled because galacticraft already has a teleporter so its not really worth it to use if this is cheaper and long range!)
Dungeon Tactics Tunnelling Device, Piston Glove, and Sticky Piston Glove (Very op, but I would consider adding them to the shops)
cqrepoured Hookshots, and Muskets (Hookshot, same reason as with the teleport pad but with Thaumcraft, muskets because why)
End Crystals (Because I want people to buy them so then getting the double ender dragon kill quest is harder)
