[joshvm]

In Oz, you could try Element14 (which is Farnell rebranded). $50 for free shipping, or $15 under. The DS18B20's are about $7 on there too, so that's the correct AUD price.

Also check out RS Components Australia. They often offer free shipping with no minimums. https://au.rs-online.com/web/p/temperature-sensors-humidity-...

RS is also a good place to buy decent mechanical bits and pieces (bearings, drill bits, etc) if you don't want to play the lottery on Amazon. They even do their own 3D printing filament which I've had some good results with.

If you need small quantities (like one-of), you should look at sample requests. This is still alive and well - almost all the big manufacturers still honour them. I've gotten some $40 RTD digitising chips from Analog, micro-coax cables from Samtec and lots of random bits over the years. You may need a non-generic email address, but that's easy to sort.

For example you can sample the DS18B20 straight from Maxim: https://www.maximintegrated.com/en/products/sensors/DS18B20....