Bought the Leplus USB-C to USB-A 3.0 Adapter [1] from Yodobashi Multimedia Sapporo Store [2].
Leplus [3] is a brand by MSSolutions Japan [4]. Since it is a relatively unknown brand, the price is cheaper as well.
I bought this adapter for JP¥980 (before tax JP¥908) and after a 5% discount on tax-free, I paid JP¥863 (S$11).
Similar to nonda USB-C to USB-A 3.0 Mini Adapter [5], this adapter is compatible with USB 3.0 (USB 3.1 Gen 1) which will give you data transfer speed of up to 5Gbps.
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Leplus USB-C to USB-A Adapter – Packaging Front
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Leplus USB-C to USB-A Adapter – Packaging Back
[8]
Leplus USB-C to USB-A Adapter
[9]
Leplus USB-C to USB-A Adapter
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Leplus USB-C to USB-A Adapter – USB-A End
[11]
Leplus USB-C to USB-A Adapter – USB-C End
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Leplus USB-C to USB-A Adapter