When you purchase Iron, you get Iron Ore, and with the proper setup, you can turn that into 5x Ingots, which is what you turn in. While its difficult to get that level, I have to take that into account.
Might be better just to have the shop give out bars, since the time you need them the most is early game, where you don't have easy access to 5x from them. Or at least have getting the bars an option for the reward? Then you could buy bars when you need them early on at a reasonable rate, while still leaving room for a profitable ore smelting industry much later on. 4 iron bars (ore doubling stage) for a whopping 50 coins is at the "very nearly pointless" level, and let's not even mention the "scrape together every resource you have for 2 gold bars" rarer materials.
Maybe the amount of coin you get from (non shop related) quest rewards should be buffed?
Leftover, I had forgotten to change the tooltip and stuff. Realistic World Gen is included int he pack now but its optional, unlike Biomes O Plenty was.
You can automate turning in crates via the EnderIO SAGMill. The Supply quest page should give you one for free and explain how it works.
SAG mill?? Ohhh! I guess I missed that part since I didn't try automating for quite a while after I finished that quest.