I am not very tech savy either, and I doubt that this solution will be appealing to everybody, but in my case it solved my immediate problem.
Here is a link to one of my product pages: https://putt.fun/products/newton-1-2-sophie-silver
I wanted the top price to be the default. Choosing an option that cost less, would then subtract that amount. Remarkably, this cannot be done in Shopify… and not for a lack of trying. It should be dead nuts simple, but as you know there are no negative values, and a coupon cannot be for less than the total cost of the product. Amazing.
My solution was to create two products, the default and the less expensive one. The template for that product has a button. The button is a metafield link. The metafield for the more expensive one contains the URL to the less expensive one and vice versa.
Since my product is a web of interrelated options, I pulled this same trick for all of the options, or “variants.” The product linked above has 7 metafield links. Each one actually takes you to a different product page. In this case, this trick solves the combinatoric limit problem with Shopify variants too.
So that is a description of my problem and solution to it. That probably isn’t your problem, and this solution might not work for you, but here is how it works from a technical standpoint:
A Metafield is merely user defined set of data. They are actually pretty easy to use once you get your mind around what they are and how to use them. It is one area that Shopify has done a good job. Metafields can be found under Settings. Your products are basically data objects, and metafields allow you to add your own data to those objects.
So you go into the metafield, name and define it. In my case, I needed to make 2 metafields for each link. For instance, PutterLabel and PutterURL. Then I went into the product template and put PutterLabel in for the text on the button, and PutterURL for the link on the button. Then, in each product I put the name and URL for the options I wanted to link to. The above page has 7 labels and 7 URLs in the product data. Extreme, to be sure. It helps to use a spreadsheet if you are going to make a web of links like I did.
I hope that helps.