maybe you are getting rained on a little bit. all that jumping around in price shouldnt happen so fast as the suppliers buy warehouse fulls at a time. prices are definitely increasing, though.
i paid 1.23 butts last week, at sams, butt only cause u.s. food didnt ship my order of butts claiming out of stock. would have been .99 through u.s. i pay 2.39 st louis. cheese, shouldnt be more than 2.00. have you ever tried roma foods? they have the best mozzarella in the world! they ship all over the country, based out of new york.
price jumping probably means the sales person is trying to make that fity... thats the kind of crap i got from sysco. u.s. has been stable so far, with little changes in comodities.