#1: If you have $2.50 handling fee on a shipping profile that is going to be PER ITEM. if someone orders 4 that is $10 added to their shipping cost.
If you only want this fee added PER ORDER, it needs to be in the package preference section. If you have it in both sections both fees are added to an order.
I don't know which wine glass but I tested this listing (I'm in NC)
https://www.etsy.com/listing/223221957/because-im-the-bride-wine-glass-weddingIt came up $11.50 to ship 1 wine glass that is HIGH since I'm not that far from NY. Add 2 of these and it is showing $15.80.....3 of them is even worse, $27.30....can't see it would cost $27 to mail 3 wine glasses from NY to NC.
A 2 lb package from NY to NC comes up $5.84 even with $2.50 add it doesn't come up but $8.34.
A 2 lb. package from NC to TX is $7.55 ($9 retail)
A 1 lb package from NC to TX is $5.54 ($6.15 retail).
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#2: Do you have RETAIL rates set or Etsy's postage rates?
If you have etsy's rates but are going to the PO to mail it's going to be higher.
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If you have a 9x9x6 item size CS is NOT going to put this in a 12x6x6 box, the measurements are too big.
The 10x10x10 is the box it would need based on your sizes.
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You probably need to double check your weight on that listing that didn't charge enough postage, seems it might have charged her the 1 lb rate instead of a 2 lb rate.
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I've been using CS since the very beginning and I've never had a package not calculate exactly right, SIngle items and multiple items have all been 100% right.
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