Only unscrupulous sellers will want you to buy with accessories. The so called "JB free software" is infact doing more harm to your phone as many of such free apps are badly cracked pirated apps ( though there are indeed some good ones ). I have several friends who got such free apps ( some even pay up to RM 100+ for such so call provided apps service )  and often complain about phone issues - unstable, often hang and crashes - a factory reset solve all these problems
Buy your phone from those reputable resellers such as SEP and install apps yourself

buy s3 no need buy accessories
no matter what
those shops just wan clear their accessories

jailbreak is only for iphone
we r used to the term root
n u can do it urself
no need for shops

same goes for upgrade
we hav guides on 1st page for that