Any One else having problems with the shipping calculator?

[marinermikes]

I have had major discrepancies on the last few items I have sold. Example.  Package from Pa. To Tennessee,  in the listing, five pounds, twenty inches by tweleve inches by ten inches. User buys the item and pays Forty two dollars and seventy five cents shipping! I couldn't believe it so I went to shipping and ran it without purchasing a label, thirty six dollars and fifty cents. Wow. Since I have had this problem the last few items I have sold I intentionally under estimated the weight to try and compensate. Thought to myself if it's this much at this weight wait until I add a pound or two!

Actual weight six pounds nine ounces. dimensions, fourteen by twelve by eight. Updated the shipping info to this spec and purchased the label. Nine dollars and seventy five cents! I refunded the buyer for the over charge. I have had to refund my last three buyers. Did some thing change for dimensions that I missed?

It's hard enough to sell any more but this makes it really hard when a potential buyer sees that shipping amount.

[fern*wood]

https://community.ebay.com/t5/Announcements/USPS-dimensional-weight-changing-in-June/ba-p/29842834

Dimensions are very important with shipping costs.  If you can keep your box below 12x12x12 then they will not apply.  Your first example clearly is over that threshold and your second one wasn't. 

[nobody*s_perfect · Accepted solution]

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@marinermikes wrote: ...  in the listing, five pounds, twenty inches by tweleve inches by ten inches.   ... Actual weight six pounds nine ounces. dimensions, fourteen by twelve by eight. Updated the shipping info to this spec ...Did some thing change for dimensions that I missed?

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Yes. In January 2019, USPS started charging a "dimensional weight" for all Priority Mail, Parcel Select Ground, and Retail Ground packages that are over 1 cubic foot (1728 cubic inches).  Previously, it had only applied to Priority Mail packages that were going to Zones 5 - 9.

Your listing was set up for a package with a volume of 1920 cubic inches, so your buyer was charged at the dimensional rate which would be 12 pounds.  Your actual package volume was 1344 cubic inches, so the label charged for the actual weight, i.e., 7 pounds.

[marinermikes]

Thank you! I found out faster here than trying to look it up online! I haven't listed much of anything in over a year. Now I know.