...and it's a really good phone. My 455C (works on Verizon network) is a Straight Talk, however. At $20, the Wal-Mart phones might be refurbs (would say so), but that's what I'm using right now and I was extremely satisfied with the quality and price. If it is the Samsung with the QWERTY keyboard that does NOT pull out, you won't like it as much. The keys are smaller and spaced too close together. The 455C is a much better phone.
Trac has the Sammy R455C (uses Verizon, denoted by C in model number) for $59.99 on the website, and it has TRIPLE minutes for life! This is a killer deal--180 minutes for the price of 60 ($19.99) plus whatever promo code for bonus minutes you can find.
86077 - good until 5/31/12 on a one-year 400 minute airtime card, which is around $100. What makes this a good deal is that the promo code is good for 250 free minutes and the 400 minutes would be 1,200 if you had a phone with triple minutes. 1,450 minutes and one year of service for $100 is a great deal!