Looking for lightweight somewhat inexpensive flatmount brake calipers for a road bike shipped from North America
If you can't wait for shipping, then your only option is to go to your local bike shops and see what's in stock now.
Brakes are important - I'd suggest politely not focusing primarily on the price, and instead prioritise compatibility, function, and availibility over appearance/price.
Your other option is to shop on your local auction websites, whether that be ebay or craiglist or gumtree, etc.
And try to have a a backup plan too, in case your primary plan doesn't work.