Plastic/resin would probably be a deal breaker for me.
LOL, Yeah, that would be quite a ways from carved wood, no doubt. These architectural corner cupboards sometimes had glass doors & barrel (round) backs and were used to display ones best silver,pewter, glass, etc. Why not ask questions of seller & ask for more pics if you are interested. Most sellers WANT clients to ask questions particularly if you cant see the object in person, much less confusion, disappointment after sale & shipping is completed.