Peace, mercy, and blessings of God be upon you. Filtering, my brothers. The quantity is limited and at a rate. The strips give a correct reading and are guaranteed. I bear all responsibility if the strips do not give a correct reading or if there is any defect. Your money is refundable. The price outside Jeddah for all regions includes shipping cost: 150 riyals. And inside Jeddah, if you receive it from the location: 100 riyals. The quantity is limited. Good luck.