Okay, well after getting it to work, I had an even better time with it. One complaint I have is I can't spend 10,000$ for a chance at a top-tier item that gives me a slightly better chance at another super rare item that actually helps fight the enemy, but whatever.
Thanks for giving it another go. Maybe I should make a post-jam MTX for an overly expensive item rolling system? I feel like it'd be in the spirit of things.