Shopify Buy Now Button

Good evening guys,
I just created my first store on Shopify, but on the product page I just have "add to cart" button, which I dont like since it may decrease my conversion rate, so I searched over the internet but couldn't find anything helpful (just an app that you need to pay 10$/month which i dont want to pay, because its too much for just a button).

does anybody know how to do it? on shopify forum they talk about permalinks, but still i dont know how to use them...

i appreciate any kind of help!

What's the app that does it? Also if you feel like it'll help you get conversions what's the harm in testing it out for a month for $10? IF it works well then you're only paying $10 for something that'll help you hopefully make $100s or $1000s in sales. If it doesn't work then you lose $10 which is lunch money.

You're thinking about this wrong. You're not paying for "just a button." You're paying for conversions, which has much more value than "just a button". If that "button" makes you an extra $20 a month then it would have paid for itself.

Permalinks explained: https://help.shopify.com/themes/customization/cart/use-permalinks-to-preload-cart