Element 14 has the Raspberry Pi 4 2gb back in stock for $67.73 which is slightly higher than pre COVID but still excellent value. The 4gb model is overkill for lots of basic applications so this allows you to get a reasonably powerful device for $25 cheaper than the 4gb version. Element14 has free shipping but it can take a while longer than Australian local stock. My Home-Assistant automation server with Adguard and around 50 devices connected uses only 550mb of memory on my Pi so 2gb is fine.
4gb version is also available for $92.40
8gb version is currently sold out.
You'll need a 3A USB-C power supply if you don't have one and microHDMI adapter to connect it to a screen if desired.
Info
Raspberry Pi 4 Model B is the latest product in the popular Raspberry Pi range of computers. It offers ground-breaking increases in processor speed, multimedia performance, memory and connectivity compared to the prior-generation Raspberry Pi 3 Model B+, while retaining backwards compatibility and similar power consumption. For the end user, Raspberry Pi 4 Model B provides desktop performance comparable to entry-level x86 PC systems. This product's key features include a high-performance 64-bit quad-core processor, dual-display support at resolutions up to 4K via a pair of micro-HDMI ports, hardware video decode at up to 4Kp60, 2GB of RAM, dual-band 2.4/5.0GHz wireless LAN, Bluetooth 5.0, Gigabit Ethernet, USB 3.0 and PoE capability (via a separate PoE HAT add-on). The dual-band wireless LAN and Bluetooth have modular compliance certification, allowing the board to be designed into end products with significantly reduced compliance testing, improving both cost and time to market.
Broadcom BCM2711, quad-core Cortex-A72 (ARM v8) 64-bit SoC @ 1.5GHz
2GB LPDDR4 SDRAM
2.4GHz and 5.0GHz IEEE 802.11b/g/n/ac wireless LAN, Bluetooth 5.0, BLE
True Gigabit Ethernet
2x USB 3.0 ports, 2x USB 2.0 Ports
Fully backwards compatible 40-pin GPIO header
2x Micro HDMI ports supporting up to 4K 60Hz video resolution
2-lane MIPI DSI/CSI ports for camera and display
4-pole stereo audio and composite video port
MicroSD card slot for loading operating system and data storage
Requires 5.1V, 3A power via USB-C or GPIO
PoE (Power over Ethernet) enabled (requires PoE HAT)
Do you have to pretend it's for business use to not get redirected?