File structure

gather/src/output/ListingSet.js

@@ -0,0 +1,10 @@
+module.exports = class ListingSet {
+  constructor (name, parts, set) {
+    this.name = name + ' prime'
+    this.parts = parts
+    this.set = set
+    this.link = `https://warframe.market/items/${name}_prime_set`
+
+    this.difference = set - parts
+  }
+}