It is most likely a scam.
Don't be discouraged by this. All you need is one buyer, not two, just one.
A few years back, everyone were selling Zoomer free Samsung Core LTE of $150 or less. But I sold a new-in-box Core LTE for $195 and an one year old Core LTE for $140.
Koodo $25 plan, Public Mobile $37 5GB, $13 250MB, $7 50min/50text,
Zoomer loyalty family plan for 3 lines $95/6GB, $0 FPL home phone