I'll see your mx500 for $70.10 delivered and raise you this Adata 480gb for $56.49 delivered.
$ vs gb i think this is the winrar.
This is also a close second, a 512gb ssd silicon power for ~$62 delivered. An extra 32gb for roughly $5.50 more.
https://www.newegg.com/global/au-en/Product/Product.aspx?Ite…
Your move, ozbargain.
https://ssd.userbenchmark.com/Compare/Crucial-MX500-500GB-vs…
MX500 effective speed +60% over SU650.
Speed rank MX500: 138/967, SU650: 538/967.
Your move megafacehead.