Hello everyone. Yesterday while I was shooping at Pet-co for I.D tags for my Gracie I saw the microchip kit and It was only 18.99 I thought that it was great,but then I saw the scanner and it was 299.99

and it only had one year guarantee so here is my question... If I want to buy the microchip do I have to buy the scanner too or can I buy the scanner later on?