Thank you for your suggestions!
I was thinking that might be my only solution will be to create states profiles for each supplier and product which will be a huge project but at least something.
Is the a way to set certain regions as a quote based? So whenever someone inputs an address from the area that requires extra fees this automatically shows message or triggers request for a quote?
All suppliers insist that I send them address and they will provide quote but I don’t know how this can be set up on Shopify for when customers places an order only product price is shown at checkout and shipping sent for a quote and then adjusted invoice shared with the customer. Also, this will be not a good user experience as customers are expecting to know total cost from the start and not wait for a quote to come through.
For the real-time carrier rates. Is it always resulted in shipping label which is printed and used for shipping (in this case I will have to organise carrier to pick up from my suppliers)? Can this be used for estimates shown to customers? Can this estimate be charger without a label?
Thanks for mentioning Price Adjustment feature I will need to google it maybe something for me in there.