Least Expensive Way To Collect All Zebra Mildliner Colors

Looking for the least expensive way to obtain all of the Zebra Mildliner pens with as few duplicates as possible... (obviously new pens, not used)

Different stores seem to be selling all sorts of different packs and palettes.

Target:

• 15 packs
• 10 packs
• random 25 pack (that doesn't populate for me upon searching, but shows it in recommended and I have seen it in store)

Amazon

• could get the origianl colorway packs, but that feels more expensive than the alternative larger packs

Admittedly, I do have some executive functioning issues going on so I may just not be putting the right pieces together. But, man, has Zebra thrown me for a loop with these markers.

Thank you so much in advance!!!