The long rumored version of the Straight Talk Samsung Galaxy S III that runs on the Verizon network is now available online from the Straight Talk and NET10 Websites for $399.99.
Finding and buying it is tricky as the Verizon based S III is only available in markets that have Verizon service but do not have Sprint service. If your market has Sprint coverage, Straight Talk will only offer the Sprint based version of the S III.
The listings on the Straight Talk and NET10 sites for the Verizon and Sprint S III versions are very similar. The only reliable way to tell them apart is by looking for the phrase "4G LTE" in the phone's description. Only the Sprint version (bottom image) support' LTE. The listing for the Verizon version (top image) omits the "4G LTE" line.
Like the Straight Talk iPhones, the Verizon based S III has apparently had its LTE disabled to satisfy Verizon's requirement that no prepaid phone on its network be allowed to access the LTE network.
If you want the Verizon version and it's not offered in your zip code, enter a Sprint-less zip like 73949 or 82210 when the site prompts you for your zipc ode. At checkout, change the zip code back to your real one on the shipping address form. If you do this, be sure that you have native (not roaming) Verizon coverage where you want to use the phone. The phone will only activate in Verizon native coverage areas. You can verify your coverage on the Verizon prepaid coverage map.
Update 11/11/2013, the Verizon based SIII model is now available from Walmart.com as model STSAS968CWTPWP.