Custom Logo Print Silver Metal Tin Lunch Packaging Box

Hello! Very interested in placing an order for 40 of these lunchboxes! Would like to know what it would cost additional (if any) to get our logo printed on the front of the box. It is a two color logo attached.
Usage:Cosmetic Stationery Gift Food
Product name:Tin Container
Color:Black White Silver
Size:Custom Size
Printing:CMYK 4C
Feature:Recyclable
Name:Tin Packaging box
Thickness:0.23mm
MOQ:20
Metal Type:TINPLATE
Use:Package
Place of Origin:CN;GUA
Brand Name:OEM