So, I was buying a $38 part. I did the shipping calculator, and shipping was $50. I figgered, OK, it's a large item. On checkout, they hit me for $130 shipping!... Call customer supprot and the guy says there's a mistake, the shipping is $50... then calls me back to say that in fact, it's $130.
Lesson learned. Don't choose parts based on the lowest possible price, but from the most reputable suppliers. It pays in the long run.