A redirector for products.
Amazon
For Amazon products, simply link to the ASIN, like this:
https://asin.to/B0B3C8XMXM
MicroCenter
For MicroCenter products, precede the 6-digit SKU with "MC", like this:
https://asin.to/mc/411389
You can also search for a UPC at MicroCenter:
https://asin.to/mc/194253138334
UPC
To look up a UPC, you can link directly to the 12-digit UPC:
https://asin.to/194253138334
Be advised: this utility does absolutely no validation of input whatsoever. Invalid products that match the regular expression for a valid product identifier will be passed through unchanged, likely resulting in a link leading to an error page. Accordingly, users should take care to validate their inputs before creating the links themselves.