Console store sales can't really compete with Steam sale in terms of ridiculous savings, but still -- the PlayStation Network does play host to some really cool video games, so when a sale like this does come along? You should probably take advantage.
As always, I will give you my favourites from the sale.
Hotline Miami: $8.97 (40% off) FEZ: $5.98 (60% off) Proteus: $5.84 (70% off) Luftrausers: $5.38 (60% off)
That's what I'd be buying if I totally didn't have them already.
FEZ in particular. That game is amazing on the PS Vita.
Anyway, you can check out the sale here. Have at it!