Airport customs

I have flown through MEX as well, but I live in Fort Worth and the non-stop is appealing. I've gotten my bags in MEX and then they had me put them on the connection ramp with no inspection, on a domestic flight to ZIH. We got the green button today, but they got a hit on the metal detector - some rings, earrings and a couple bracelets.

A few years ago, I brought in some parts for my 10 year old Ford Escape. I had the receipt from Amazon, but they said it is the value of what the part would cost in Mexico and they determined what it was. I ended up paying more in duty than the parts cost me.