再问一下你们， 为啥价格差那么多？

这个walmart,可以吗？～$20

https://www.walmart.com/ip/Contour-Next-ONE-Blood-Glucose-Monitoring-System-Value-Pack/278244026

这个 ~ $85， 看不出太多差别呀。

https://www.diabeticwarehouse.org/products/free-contour-next-one-glucose-meter-kit-w-purchase-of-150-test-strips?currency=USD&variant=30726597115969&utm_medium=cpc&utm_source=google&utm_campaign=Google%20Shopping&utm_campaign=gs-2018-09-13&utm_source=google&utm_medium=smart_campaign&gclid=EAIaIQobChMIsMvQ0KiK-QIViv_ICh0hCgQhEAQYASABEgK1w_D_BwE

是需要买很多test strips 吗？