The price/condition ratio on this horn is very good! It looks new except for a little pinhead-sized dent in the leadpipe. There may be some others, but I didn't notice them. The seller says it comes with a used Yamaha case, so if you're not using a gig bag you might inquire about its condition. The buy-it-now price is $1600 and there IS a make-offer button! (A new one will cost you around $2500.)
SOLD FOR $1,600
https://www.ebay.com/itm/Demo-Yamaha-YEP-321S-Euphonium/352838412025