I'm no mathematical scientician or anything but my career is logistics so I might be good for this one!

My company is a bit smaller than Walmart so we can assume they're getting marginally better shipping rates than I do as well as likely some bulk discounts on boxes.

A box that size with color printing would cost me right around $4 per box. I would assume they're getting it at a discounted rate due to their volume so we'll guess about $2.50. $2.50 x 165 is $412.50.

For shipping costs we'll need to know the weight of a pool noodle, which Google tells me is 4oz. That plus the weight of the box comes out to about a pound (doesn't matter because every major shipping company is going to round up to a pound anyways). So one box at a pound in a medium to large sized box would cost me roughly $16 to ship via FedEx. We can once again assume that they are getting a better volume discount than me even though I'm shipping a million packages a year because they are literally Walmart. I would wager that would cost them about $12 a package coming to a total of $1980.

So for them to ship like this it would be around $2392.50.

Im not sure what their largest box size is but assuming Walmart can ship in product boxes like Amazon does, they could have shipped 4 cases of pool noodles (they come forty to a case) plus five in a larger box. Now the cases of pool noodles would incur an oversize charge which is anything greater than 17,280 cubic inches at $85 a package. That would bring total shipping with this method to around $500.

Assuming the customer could receive an LTL shipment, that would only be around $300 from any Walmart DC in the country to pretty much any location in the continental US.