Start with the question the customer is asking
If someone asks for a quick part, use cost per gram or price per hour as a starting point. If the job is commercial, use the full calculator so labor, packaging, fees, failure risk and margin are included.
Use the hub as an internal map
Search engines and visitors both need a clear route through the site. This page groups the most useful calculators and guides so every important pricing page is reachable from one crawlable place.
Keep the final call to action simple
Every guide leads back to the same action: open the free calculator, enter the job numbers and create a quote when the price is ready.