Is there a way to find out about Movie/TV Budgets?

Try "THE NUMBERS" which has a section on budgets:

Caveats apply:

• all Hollywood accounting is fictional
• budgets are mainly designed to ensure maximal grants / tax breaks / investment and are most often grossly inflated (and rarely understated)
• public versions of budgets of good movies often pick up costs of other movies that do less well to hide studio failures
• studios are highly incentivised to ensure movies make as little profit as possible because that would mean paying out "net points" to participants. THey add general studio costs and thereby ensure that the studio 'central operations' makes the bulk of the profits (which they don't share with anyone else)
• "Star Wars has never made a profit" tells you all you need to know about Hollywood accounting

The Internet Movie Database lists the budget on the main page of a movie under the heading Box Office.

I haven't yet found a resource for television budgets. It seems accountability is less. The reasons I've found so far are

• Many actors want their salaries secret.

• Since tickets are not sold, "weekend profits" is less a marketing tool.

• Advertisers do not always want to tell how much they pay (which is where primary budgeting is derived, with reruns, syndication and DVD/Bluray being secondary).

• Budgets can change from episode to episode depending on things like locations, guest stars and contract renewals.

I've been looking, but do not expect to find a definitive Db.