u/Gottathinktwice9

Hello people,
I am currently looking at an ad which is selling Roland fp e50 for half of its retail price. (Its a 2 year old used piece)
I am a beginner been learning since the past 8 months.
My instructor has instructed that I would be better off buying a piano for practice.
What should I do? Buy a new one? Or a used one?
Is the Roland FP-E50 good?