this is boobop's bodega, 7-eleven. on the outside. some like jaqai dennis, who we met in hackensack, new jersey, create their own jailhouse economy. >> i got that, that's nine. >> they give out their commissary now in exchange for repayment with interest later. >> i give them one of these for two of these back. i might give them two of these, sometimes i'll be like, just give me three back. made about $52 just off of $30. >> biggest items we hear about constantly? ramen noodles and honey buns. the inmates can make all sorts of recipes out of ramen noodles. >> i got the cinnamon roll and you grab the honey bun. >> and the same with honey buns. food is money in jail. and those two items are, you know, the gold standard. >> i've never seen so much ramen in my life. everybody knows that in jail or prison, ramen ends up being currency, and if that's the case, this is pretty much the ft. knox of the jail. >> the inmates who work the commissary loading dock at san antonio's bexar county jail see it pretty much the same way. >