I was intrigued by what you have said, because I have also bought an ASUS NUC mini-PC today, in Europe.
I paid EUR 510, which means $593. This is with all taxes included, so the price without tax would be about $490.
I have searched now the ASUS mini-PC on Newegg, and its cost is $679, around +38.5% more expensive.
This is wild, because indeed, until recently the price of electronics devices was significantly lower in USA in comparison with Europe, while now it is the reverse.
This is not a "Made in China" mini-PC, which might have been affected by worse tariffs.
Moreover, I have equipped the mini-PC with 32 GB DDR5 & 1 TB SSD, while cursing the more than triple price of DDR5 compared with last summer, so that now the DRAM has been more than a third of the price of the complete computer.
This configuration has cost me the equivalent of slightly less than $900, without taxes. The same configuration has a price on Newegg of almost $1200.