Intersting on the Devi, not sure if i agree tho. 30cm prow only lances would be quite craptastic, much worse than the 30cm guns. At least with the ships that have the prow lances they also have 60cm range so they can get hits in while closing and are designed with closer broadsides in mind.
On the Jovian I dont think lowering its price and adding guns are a good idea. It should have a nova yes but it should be priced comparable to the Mars in that case, 270-280.
As for the rule book my paper version reads the same as the online, i got my box set in late 00 so maybe they had corrected the prices by then? I know we had been playing the Ret at 345 even before i decided to get my own fleet but im not sure when the first faq would have come out, although i imagine not long after the initial release given how gw and rules are
.