The other capacities of this model are also available on sale -
$6.5 ADATA UC300 32GB
$10 ADATA UC300 64GB
$16 ADATA UC300 128GB
And this model is available if you're looking for a USB drive with a Type-A connector:
$24 Patriot Xporter Core 256GB USB 3.2 Type-A Flash Drive
Edit: The 256GB UC300 model is now out of stock. Will update if more stock becomes available from the distributor.
Nice to see some good Type-C options.. can't say that I've seen too many around.