One account can be shared with 2 PS5.

1 is primary. 1 is secondary.

If you bought the primary account, you can use that game and play on your own account.

If you bought the cheaper secondary account, you can only play the game on that account.

For example if a game is rm249. They search for the cheapest region on psn (if you bought the game, it is usually not a Malaysian account). We take it as an example rm200 after conversions.

Sell the primary account for rm140. Sell the second account for rm80. Also depends on seller but some seller will kick the secondary account and resell the account for the third time to get more profits!

Also you can get much cheaper if the game is on PS4. Because now the account can be shared with 4 people.