Didn't mean to offend, but when it comes to paying a dollar amount with a comma in it for a watch, things like that do matter to buyers, it's not only the performance but also the collector value. This watch's collector value is hurt by the engraving, it's unfortunate but it really is. The caseback for a Tag (the part that the engraving is on) has the watch's serial number on it, so I'd either be buying a watch that would eventually have scuffing and sanding on the caseback (to remove the engraving), or mismatched parts. Either way part of the value of the watch is the provenance of it.
If I only cared about performance I never would've replied and just continued wearing my Apple Watch. The Tag will have little collector value (similar to having a Kobe Bryant autograph that said "To Jenny" in front of it, it's just not worth as much) because of the engraving.
Again, my most sincere apologies, didn't mean to offend, just explaining why even something as small as an engraving can damage the value of a watch like that so much to me. Best of luck with the sale, it's a great watch.
Also, you're marketing this as a NEW watch. It just isn't. It wasn't worn by anyone yet but it's not sealed in the box and it has engraving which is significant to someone else on it. That's not new.