How can you quickly make a Landing Page?

Question

CMS

Now I'm making landings, usually there are 2-4 products on it with the ability to select the quantity and the order button.
Each item has its own price.
It may be that there will be a discount if the quantity of the selected product is from 2 pieces.
And then suddenly you need to change the goods.
Let's leave only 2 and remove the discount.
Or add a new item.
As a result, you have to rewrite a bunch of code and also change the table in the database.
You can easily cope with this task if you place goods on the engine of an online store, but...
An online store is no longer a landing page.
Maybe there are some ideas how to solve my problem with the help of ready-made cms?
Or do you need to write your own solution with the admin panel?
In principle, the task is solvable for me, but I need time which I don’t have, or I need money to pay the programmer, which I also don’t have extra.

Answer 1

CMS is too powerful for 4 products.
Fill in a simple json file with products (a la bd)
Make up a landing page template with bugs in the style of {{here is a variable with products}}
Write a console utility, for example, in nodejs, that collects the first points together (it will not be a problem to find a ready-made template engine).

Answer 2

node js

Answer 3

What is stopping you from building WP once with the right plugins for all occasions and using it. My office does just that, though it’s such a wild porridge, but it can be done competently. There you have a store and capture forms with ready-made plugins.
What prevents to make a self-writing once with the necessary functionality.
I saw many more landings on MODx, I didn’t work closely with it, so I can’t say anything, but the admin panel is convenient, you can add PHP code directly in the admin panel if necessary. The speed of work is excellent.
In general, there are many options.

Answer 4

Piecrust, Phrozn
Content in yml, templates are collected and dumped into html.

Answer 5

write a mini php admin panel to display | disable the product, as well as its corresponding discount.