These chairs will hit $800 to $1500 at auction and probaly 2x that in a retail scenario. Shipping is $175 flat-rate to the States and it is located in Saint-Hubert, Quebec.
If interested, do check the images of the back of the chair closely. Something seems to be going on there, but I can’t tell for sure with the small size of the photos and lack of detail. I’d ask the seller for more detailed photos.
More details at the listing.