diff --git a/src/sim/catalog.ts b/src/sim/catalog.ts
index 8e2780d..297ceff 100644
--- a/src/sim/catalog.ts
+++ b/src/sim/catalog.ts
@@ -30,7 +30,7 @@ export function createCatalog(games: Game[]): Catalog {
   const byId = new Map<string, Game>();
   for (const g of games) {
     if (byId.has(g.id)) throw new Error(`Duplicate game id: ${g.id}`);
-    if (g.launchPriceCents <= 0) throw new Error(`Invalid launch price: ${g.id}`);
+    if (!(g.launchPriceCents > 0)) throw new Error(`Invalid launch price: ${g.id}`);
     byId.set(g.id, g);
   }
   return { games, byId };
diff --git a/tests/sim/transactions.test.ts b/tests/sim/transactions.test.ts
index c2832a1..f7dab32 100644
--- a/tests/sim/transactions.test.ts
+++ b/tests/sim/transactions.test.ts
@@ -166,8 +166,9 @@ describe('requests', () => {
     recordSatisfiedRequest(s);
     expect(s.reputation).toBe(20.5);
   });
+});
 
-describe('review fixes', () => {
+describe('reward and cash edge cases', () => {
   it('keeps the free trade reward when there is no difference to waive', () => {
     const s = createNewGame(1);
     const card = issueCard(s.loyalty);
@@ -197,4 +198,3 @@ describe('review fixes', () => {
     expect(s.day.trades).toBe(0);
   });
 });
-});