I have all my questions about amazon solved! But, what if customs wants me to pay taxes? How do i pay them?

So, Im 13 years old, looking forward to become an audiophile, but, there are some problems, i live in Mexico and i have to pay for my headphones. Searching for good headphones in Mexico is difficult and pricey (once i had to pay 120$ to get a pair klipsch s4). The headphones i want at the...

So i´m new in the audiophile world and i find it quite interesting, after sticking with IEM´s (klipsch s4´s) i´ve decided to step up a bit and buy some nice cans, and it all went down to this two headphones, the beyerdynamic custom one pro and the sennheiser hd 439 (i can get the fiio e6 with...