Looking for Best Deal on PS5

Same as the title.I'm looking to pick up a PS5 (disc) and wanted to ask this sub for advice on the best deals out there. Should I get it online or will I find better discounts by visiting Croma /Vijay Sales or any local stores? Also, is anyone selling their PS5 secondhand? I'd be interested in that too if the price is right! Lastly, are there any specific times of the year I should be looking out for (e.g. Black Friday, Big Billion Days, etc.)? Any tips would be much appreciated!