rooms={'instrum':{'hamer':{'price':1,'time':1,'compon':['Fe']}},
 'materl':{'nail':{'price':1,'time':1...}}
 'elem':{'Fe':{},'wood':{},'C':{},'melon':{}}
 'food':{'vegatable':}}

df=pd.dataFrame()
for room in rooms:
 for tools in room:
 time,price,add=[],[],[]
 for tool in tools:
 time.append(tool['time'])
 price.append(tool['price'])
 add.append(tool['price']-np.sum([i['price'] for i in tool['compon']]))

 df['time']=time
 df['price']=price
 df['addition'] = add