Hi, I am sending in two different colour of the same product which are small and light, 25 of each colour as I’m new to fba I got 2 different shipping labels, how ever my manufacturer has emailed me today saying as the cases are small and light weight 1.5kg each Amzon is charging them an extra fee (45usd for each case so 90usd in total) but if they have both colours in one carton it would be cheaper (1 x 45 usd). What I’m confused with is I created 1 shipping plan and got 2 shipping labels again meaning 2 cases can I put both these cases in to one larger case? And do I use both the shipping labels on the master carton? But then I’m assuming Amazon would want the dimensions for the master carton? Can someone please help with this ?