(The Ferret Business pack did shops before this, and did them better, but this modpack made the shop more accessible in the early game).

The modpack entirely revolves around the shop. You can raw resources like ingots and more refined items from both tech and magic mods for money. You can trade that money for ores (especially rarer ones like Ardite/Cobalt), difficult to obtain resources (mob drops, potions, food), or semi-creative items (Thaumcraft Nodes). It lets you exchange the effort you’ve put in one place to get progress/resources in another place so you can do more of what you enjoy and less of what you don’t.

There’s a “progression” mode which is an expert-lite that changes only a few recipes to get a chain of progression. It’s not a proper expert pack that’ll challenge you, but rather force you to go through all sorts of mods to get to the ones you want to. Rotarycraft is in the pack, but is locked behind Enderium whether you play on progression or normal, which is supposed to be a kitchen sink mode.

I came back to this modpack years later, and the progression and rotarycraft blocking is a little disappointing. But the shop still does its thing of helping you play more of what you want, and that’s what’s important. I should make a sequel soon. (and yup, I’m the modpack developer)