There are NO spot meters available that cheap. None. Even the 5 degree attachment for a Minolta incident meter will cost you $50, and then you'd need a Minolta incident meter (Autometer III, Flash Meter IV, Autometer IVF, Flash Meter V, and Autometer VF) which will add $100-$200 depending on model and condition. A spotmeter will cost you $200-$300 for a good one.