import taxes are what they are, especially for what TH deems as "luxury items"
i expect amazon has them roughly correct 99.9% of the time
however it is unkown if amazon also sneeks in some admin fee with that
i have ordered items individually to avoid import taxes (deposit)
as it worked out $15 cheaper in total
as individually there was no import fee,
but combined, the total was over 1500 baht so import fee on all items
so answer to your question is YES
however most of the time i use amazon the item is above 1500 baht anyway
thankfully amazon shows you the import fees before you checkout
so no nasty surprises