Ballotpedia has this article, with data on how much it cost to put 2010 initiatives on the statewide ballot of all the states that had statewide initiatives that year. The average cost to get an initiative on 2010 ballots was $3.29 per required signatures. Although 49 statewide initiatives qualified in 2010, only four of them got on the ballot without hiring a petition management company.
What price to have a REAL Democracy via P.R. and nonpartisan App.V. ???
i.e. to BANKRUPT the various loot-the-treasury special interest gangs.