US$20 is cheap but for my recommendations/ favorites, I like
- Deut 1-11 (Arnold), Judges, Psalms, Isaiah, Jeremiah (Goldingay)
- Matthew, John (Michaels), Romans (Moo, 2nd ed.), 1Cor (Fee, 2d ed.), Gal (DeSilva), Ephesians, Pastoral Epistles, Hebrews (Cockrell)
- (Yes, NT vols. are apparently more update)