I don't know where the full times series data are collated, but the components of the PPI and CPI indices would have a heck of a lot of disaggregated price level data in index form.

So for an example of coverage of monthly price indices, Table 5. Producer price indexes for the net output of selected industries and their products (pdf)

I've been accused of being a Marxist, yet while Harpo's my favourite, it's Groucho I'm always quoting. Odd, that.