No they do not work on a bid system like AMS. Enter Bookbub in the search facility on this forum. There are endless posts with information about the promotion site. Google it too and learn what it offers. Be prepared for some mighty strong competition. They're very picky in whom they choose.
Some of the other threads estimate those costs at almost $5 a click. Others say you can target great keywords and get away with $2.50-$3.00. Haven't seen a post yet comparing results.
And yes, Bookbub does have ads now like AMS.
They used to be way more effective, and then just like everything in indie marketing; when it became available to everyone the price shot up and people began ignoring what they were looking at because they are forced so much garbage.
how effective is ams? has anybody used them?
i have no time for ads actually. busy with household work.
what kind of strategy would be great for me. I have planned newspaper ads. other than that what other options do I have. I do not like to collect email. and i do not have any automatice email sending software.