When can I get 2 of them?

Based on the search results, it looks like you can get 2 of the 205 65VR15 Radar RPX500 Bs tyres for R1470 total. The Harley Davidson Tire Pressure Monitoring System for R4222 seems unrelated to the tyres you asked about. The Tyre Pressure Gauge for R289.99 could be a good accessory to pick up with your two tyres, to make sure you keep an eye on the pressure. Proper tyre pressure helps ensure optimum performance and safety. At R289.99 each, the gauges seem like good value too. Let me know if you need any other details!