no, the disparity in rates is not NEARLY that much.
Maybe, maybe not..its a hard muliple to pin down but
“Recent headlines have stated: “Super PACs Pay Up To Six Times As Much To Run TV Ads As Actual Campaigns” and “Why Campaigns Have the Edge Over Super PACs on TV.” It’s true, campaigns have several advantages over Super PACs when it comes to buying media advertising time.”
http://www.mentzermedia.com/issue-advertisers-pay-candidates-much-lot/
https://sunlightfoundation.com/blog/2015/12/22/the-high-cost-of-television-ads-for-super-pac/