The price at all locations that I've seen it at is $99.99. There is one option that appears to be a better value than purchasing it direct from Tracfone or your local retailers.
HSN, which officially launched the Android lineup for Tracfone in September with the Samsung Galaxy Centura now also offers the ZTE Valet. Though unsure how long the sale is on for they are offering the ZTE Valet for $99.99 which also include 600 Minutes, 600 Texts and 600 MB of data plus a car charger. They also let you pay over 3 months ($33.33 a month as of 10/19/13).
The HSN site says their regular price is $149.99 which is still a good price considering it comes with the air time, charger and lets you spread out the payments.