Hi, I'm glad this fits what you're looking for!
As far as I know, you don't need a PayPal account to make the purchase, just fill in your card info.
You can also try to purchase it on my Ko-Fi page, apparently you can enter your credit card directly there: https://ko-fi.com/s/ea3316926e
My Ko-Fi page hasn't been updated in a while, but I just added the 90 RPG Battle SFX pack so you can try to purchase it there. Please let me know if there's anything else I can do to help you!