Anyone have issues with shipping Canada to USA?

Saw something on Agon I’d like to get but seller is in Canada. I’ve heard all the stories of getting slapped with customs and duty charges and curious of any advice on how to go about this in the best way or whether it’s worth doing at all. Product was a set of cables less than $200 if that matters at all. Thanks!
I bought a tube preamp from a Canadian seller recently and it cost me about $50 via USPS. Took about a week to get it with no problems.
Purchased used Harbeth 40.1 speakers and paid no additional fees. No issues.  
I just bought something.  No problems.  Took about a week to arrive.  There was a fee, but the value was around $1K.