Quad-core is only for the International version. All of American version of S3s are due-core.
Ok, I've bought and just received the "Pre-own" S3 from Boost for $195 during the Cyber Monday sale. The phone looks like brand new, no scratches or any other dents or marks. It doesn't come with the fancy retail packaging, instead it came with a smaller Boost mobile box (I've attached the pic). Inside the box, it has the handset, battery, and the charger.
One thing I notice as soon as I've power up the phone is no Boost animation and no Boost bloatwares what so ever. Only thing it has the Samsung's apps. Can someone verify who purchase brand new S3 from Boost and let me know if the new S3 has Boost animation/bloatware? I'm loving the fact that it doesn't have any Boost bloatware.
Anyway, I haven't transfer the activation from S2 (my soon to be old phone) but so far everything seem working perfectly. (fingers crossed!)
Edit: Ok, apparently I've talked too soon regarding Boost's animation and bloatware. As soon as I activated, it went through system update and loaded Boost animation and crap load of bloatwares. Oh well, I guess I'll root it and get the bloatwares off.