The limits itself of the deal is pretty low.
If you generate using DALL-E2, it consumes 9 credits per generation. That's ridiculous. That means, with the deal, you get 500/9 = 55 images per month that's preposterous.
There's no showcase for the discovery of the best art until you search a specific keyword.
Overall, it's too early to bet on it, but given the price, I'd give it a shot before thinking about a refund.