diff --git a/src/main.ts b/src/main.ts
index 5a2b570..5490a78 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -1,6 +1,7 @@
 import express from 'express';
 import prepareDB from './prepare';
 import getDB from './database';
+import { tiers, type, transaction } from './types';
 
 const app = express();
 
diff --git a/src/prepare.ts b/src/prepare.ts
index b215359..7c74838 100644
--- a/src/prepare.ts
+++ b/src/prepare.ts
@@ -2,21 +2,19 @@ import Database from "better-sqlite3";
 
 export default function prepareDB(db: Database.Database) {
     // setup tiers table
-    db.exec("CREATE TABLE IF NOT EXISTS tiers (tier INT PRIMARY KEY);");
-    for (let i = 1; i <= 8; i++) {
-        if (!db.prepare(`SELECT tier FROM tiers WHERE tier = ${i};`).pluck().get()) {
-            db.prepare("INSERT INTO tiers VALUES (?)").run(i);
-        }
-    }
+    db.exec("CREATE TABLE IF NOT EXISTS tiers (tier INTEGER, enchantment INTEGER, PRIMARY KEY(tier, enchantment));");
+    db.exec(`INSERT OR IGNORE INTO tiers (tier, enchantment) VALUES (1,0), (2,0), (3,0),
+        (4,0), (4,1), (4,2), (4,3), (4,4),
+        (5,0), (5,1), (5,2), (5,3), (5,4),
+        (6,0), (6,1), (6,2), (6,3), (6,4),
+        (7,0), (7,1), (7,2), (7,3), (7,4),
+        (8,0), (8,1), (8,2), (8,3), (8,4)`
+    );
 
     // setup item types table
-    db.exec("CREATE TABLE IF NOT EXISTS types (type VARCHAR PRIMARY KEY);")
-    for (const type of ["cloth", "hide", "fee_crafting", "fee_market"]) {
-        if(!db.prepare(`SELECT type FROM types WHERE type = '${type}'`).pluck().get()) {
-            db.prepare("INSERT INTO types VALUES (?)").run(type);
-        }
-    }
-    
+    db.exec("CREATE TABLE IF NOT EXISTS types (type TEXT PRIMARY KEY);");
+    db.exec("INSERT OR IGNORE INTO types (type) VALUES ('cloth'), ('leather'), ('bar'), ('block'), ('plank'), ('fee_crafting'), ('fee_market');");
+
     // create transactions table
-    db.exec("CREATE TABLE IF NOT EXISTS transactions (id INTEGER PRIMARY KEY AUTOINCREMENT, timestamp INTEGER DEFAULT (unixepoch()), tier INT, type VARCHAR, cost INT, CONSTRAINT fk_tier FOREIGN KEY (tier) REFERENCES tiers(tier), CONSTRAINT fk_type FOREIGN KEY (type) REFERENCES types(type));");
+    db.exec("CREATE TABLE IF NOT EXISTS transactions (id INTEGER PRIMARY KEY AUTOINCREMENT, timestamp INTEGER DEFAULT (unixepoch()), tier INT, type TEXT, cost INT, CONSTRAINT fk_tier FOREIGN KEY (tier) REFERENCES tiers(tier), CONSTRAINT fk_type FOREIGN KEY (type) REFERENCES types(type));");
 }
\ No newline at end of file
diff --git a/src/types.ts b/src/types.ts
index 5afeda3..681406a 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,3 +1,5 @@
 type type = { type: string };
 type tiers = { tier: number };
 type transaction = { id: number; tier: number; type: string; cost: number };
+
+export type { type, tiers, transaction };
\ No newline at end of file