Woocommerce/Product Add Ons and Calculations Help

We are looking for some support on a Woocommerce website that has a front end label/sticker calculator.

Ideally I would like to work with someone who works uk based house 8.30 - 5pm as I don't have time to work in the evenings on this.

I have recorded a 3 minute video here: https://www.loom.com/share/398975ec53084c2aba818e7422f4ce6f?sid=0990ebe8-621d-423a-8d9b-d329a99e8870

URL: https://labelz.co.uk/product/labels/

We have spent a lot of time and money getting the calculator to where it is today and Im hoping the calculation is a simple fix that someone can help with.

The basic sums are:

Calculation:
Looks up Length and height in the CMS using a table, halves the price, adds the material (extra for Silver, Clear, Silver PP), adds Varnish, Adds Laminate finally times by number of labels.

Varnish Prices:
Matt Varnish (+15%)
Gloss Varnish (+15%)
Gritty Matt (+15%)
None

Lamination Prices:
Matt Laminate (+20%)
Gloss Laminate (+20%)
Soft Touch Matt Laminate (+20%)
None

I believe this should be fairly straight forward to resolve as the prices are out and in the attached spreadsheet (mentioned in the video) you will see there is a percentage difference based on the clients expectations compared to the website. See the 'website spot check' tab of the document, top part of this document. The secondary table can be ignored for now.

There is no budget for this at the moment so Im looking to see what people think on an estimate. We are also looking for a developer we can rely on for other work as we have other technical projects coming up so this will lead to more work.

As a final note, I will only work with people through People Per Hour and not outside of this.