A bunch of games have actually dropped in price randomly, not really flagged as a sale, just "was $X, now $Y":
https://ebgames.com.au/nintendo-switch/any/any/any/all-promo…
They may not all be considered deals vs grey imports, so I'm not going to list them all but a lot of those are good prices vs AU stock.
Notables are:
MXGP3 Motocross $28 -
88 Heroes $28 -
Sine Mora EX $28 -
FIFA18 $36 -
Darkest Dungeon Ancestral Edition $47 -
Wonder Boy the Dragons Trap $47 -
Fire Emblem Warriors $88 -
If you're ok with preowned, some of those are also quite low.
PREOWNED:
$36 ($47 new) - https://ebgames.com.au/nintendo-switch-230845-One-Piece-Unli…
$36 ($47 new, considered awful port) - https://ebgames.com.au/nintendo-switch-236789-WWE-2K18-preow…
$36 - https://ebgames.com.au/nintendo-switch-232439-Sonic-Forces-p…
$36 - https://ebgames.com.au/nintendo-switch-236771-LA-Noire-preow…
$36 - https://ebgames.com.au/nintendo-switch-225933-Farming-Simula…
$23 - https://ebgames.com.au/nintendo-switch-229382-Monopoly-for-N…
It's part of the half yearly sale. There's been several posts here about it already