I trust you are not comparing 'sold' prices to 'list' prices.
If you are comparing sold prices of 2013 to sold prices of 2014, then you do know what is happening.
Your question needs to be, "Can I afford to wait until 2015?"
Or, "Where are the 'real' buys in Tyngsboro, Ma today?"
In either case, picking up the phone and calling a local REALTOR will be a great first step in interpreting the reliable data a professional has available.