You should ideally compare the features and prices of the best monitors available and think well before making a choice.
Words of advice to you here - try and buy a genuine GM. The company manufacturing it should be reputable and must be in the healthcare sector, and known for its products. The device might cost you little more than the ordinary glucose monitor might. It will assure you of precise readings and value for money.

The average level of blood glucose after the fast of 8 hours must be between 70mg/dl and 110 mg/dl. The level of random blood glucose must be in the range of 70 mg/dl and 130 mg/dl. The elevated blood sugar levels start to damage many vital body parts.
It leads to blood vessel as well as kidney related issues.