Original listed price is $192.50 so a reasonable discount if this drive works for you. Update price.
147 in same listing from Amazon US
what the difference between P1 and P2？
slight difference in daily use. P2 was reported to have some tlc version (especially in 1tb). Can refer to the discussion on Reddit
$141 here - https://www.shoppingexpress.com.au/buy/crucial-p2-1tb-2300mb...
Shipping is just under $11, so works out slightly cheaper when costs are combined.
Aus Post or Couriers ($12.95) for WA
Still slightly cheaper
P5 is much better if you have the $$
P1 is selling for $129.