By the information in your post, I gather you were just arrested for a 3rd retail theft. Such is not as bad as the fact that this is your 2nd retail theft in a year, which is not as bad as the fact that your latest theft violates your felony probation, which is not as bad as the fact that you are on probation for theft. Violating your theft probation with an act of theft is about as bad as it gets.
Based on those facts, prison is definitely on the table, but probation is indeed possible. You would be in worse shape if the latest act of thievery involved a greater value amount.
You are in a situation where an attorney would truly do you some good. If you are deemed poor, you'll qualify for a taxpayer-funded attorney at the public defender's office. If not, hire a private criminal defense attorney in your area. You may want to try Aaron O'Brien, John Musca, Nico Vitale, or Dominick Russo.