Earlier this year the same plugin went on sale for $29. Might want to wait.
Soundshifter does both time and pitch shifts. For time shifts, nothing out there is more transparent than AudioSnap, which you already have.
For pitch-shifting, there are alternatives. Even the old freebie Kerovee surprised the heck outa me when I tried it. For small shifts, V-Vocal still works fine for me. For more demanding edits, Melodyne rarely fails to live up to its expectations. Other candidates would be the aforementioned zplane (expensive) and Aegean Music's
Pitchproof (free).