Hello @ayo.adesina,
Here are the answers to your questions:
A: Pricing in sandbox and production can indeed be different, as sandbox pricings are default values based on distance and type of transport, and our sandbox bots don’t have VAT by default, while specific pricing can be set up in production.
B - C: The VAT charged depends on the courier’s license, some of them will not charge any VAT, but others will. The price returned by the pricing endpoint does not include VAT because we can’t know which courier will be assigned to the delivery.
D: Pricing is independent of the time. You can see more details in this article: How does the pricing work?.
Best Regards,