Looking at an listing of TE in the US with EIS shipping, it now has "duties" shown under the shipping cost, but a listing for a TE manual doesn't have this shown (0% rate), instead states "This item may be subject to duties and taxes upon delivery." 
Struggling to find an active US listing that still has GSP, most have transitioned over the EIS, or removed international completely. Sellers everywhere have always hated dealing with international shipping themselves and prefer to use GSP/EIS.
EISD and regular (non ebay) shipping listings, don't show anything on the main listing page, unless you look at the shipping tab. "VAT may apply. The actual VAT requirements and rates may vary depending on the final sale."
Oddly I'm noticing shipping prices seem a lot more expensive*
now they have changed to EIS from GSP, resulting in me clicking the X icon & forgetting about the item.
*the opposite to how they are advertising the EIS service. 
David
We have reduced VAT for literature, earlier it was none.
Means that kid's picture book without text is regular VAT but added a word here and there and VAT is reduced.
Maybe these kind of things are why duties and taxes are less exact.
But I see the problem now.
Shipping:
EUR 14.95 Economy Shipping. See detailsfor shipping
Located in: Ljubljana, Slovenia
Shipping:
GBP 10.00 (approx EUR 11.38) Economy Shipping. See detailsfor shipping
International shipment of items may be subject to customs processing and additional charges.
Located in: Caterham, United Kingdom
Shipping:
US $9.00 (approx EUR 8.24) USPS Priority Mail International Flat Rate EnvelopeTM. See detailsfor shipping
International shipment of items may be subject to customs processing and additional charges.
Located in: Rock Creek, Ohio, United States
Shipping:
US $20.89 (approx EUR 19.12) eBay International Shipping
. See detailsfor shipping
Located in: Saint Louis, Missouri, United States
This item may be subject to duties and taxes upon delivery
Shipping:
US $14.00 (approx EUR 12.82) eBay International Standard Delivery. See detailsfor shipping
International shipment of items may be subject to customs processing and additional charges.
Located in: Bloomsdale, Missouri, United States
My checkout added VAT to everything, before that the cart was without any.
So if VAT is not stated earlier it will be added later.
Maybe those eIS sellers are not sure and add something to be sure.