I know for sure you can have a refund requesting it to Itch support. I don't know exactly how long it takes, but I'd suggest you to wait until you receive the the refund before purchasing the bundle
Thanks for the information. I understand that requesting a refund through Itch support is possible. However, since refunds can also be processed directly by the seller and that might be faster, would it be possible for you to handle the refund on your side? I’d really appreciate it, and I plan to purchase the bundle afterward.