Lack or USB Extension Cables at CDR-King

I bought two cheapo USB extension cables for 30 pesos each to extend the charging cables of my tablets. After a month they would intermittently stop charging but since they had only a week's warranty, I couldn't replace them. I had to buy a new one.

It seems CDR-King is out of stock of extension cables because their Trinoma branch, one of their largest branches, is out of stock of these cables. I had to buy a retractable USB cable even if it wasn't what i was looking for. The last time I bought USB extension cables, at their Ayala MRT branch, they only had these 30 peso cheapo cables to offer. Is there something wrong with their chain of supply?