Game went on sale

Give the refund application a try. I think people will be sympathetic about you having bought a game they dropped the price on right after.

As everyone else stated: go for the refund

Anyway, you can easily predict the major sales: balck friday, christmas-new year and usually easter and slmething at the stsrting of summer

And around event times like E3, Gamescom and the Xbox XO show

Noted above reply also take in consideration that you if you submit a request it doesn't mean you will get the refund, policy states that digital articles are no subject of refunds unless the request is valid.

You would have to submit a
refund request and then repurchase the game while it's still on sale.

As everyone else stated: go for the refund

Anyway, you can easily predict the major sales: balck friday, christmas-new year and usually easter and slmething at the stsrting of summer