With the Content - PaddleSubs Link plugin enabled, {pslink gold-membership} becomes the full address of the product's page, and {pslink view=products} the address of the products list. Use the tag as the address of a link:

<a href="/{pslink gold-membership}">Join now</a>

If you have a menu item for the product, the link uses its address. You can give the product's ID instead of its slug.

To send visitors straight to one price, add ?price= and the price's name, PaddleSubs ID or Paddle ID to the product page's address, such as https://www.example.com/join?price=Yearly. The page then shows only that price, with a See all billing options link to the rest.