Hold that eBay bid. Tomba! is available now on PSN, at a price more reasonable than you'll find for the PSOne disc. Contrast that with new(er) PS3 releases including Magic: Duels of the Planeswalkers 2013 and Ghost Recon Future Soldier.
Vita owners can pick up Lego Batman 2 on PSN today, along with the new Wipeout DLC. You can also benefit from a Capcom sale that offers (among other things) Power Stone Collection and Street Fighter Alpha 3 Max for $5 each. See the PlayStation Blog for this week's full release list.