I'm in a relatively low-competitive niche and have been following a sort of long-tail-concept ever since. Bidding a maximum of 12 cent on about 20k products over a threee months test-period in winter, I received an average of 200 visitors a day from google shopping. Quite satisfied with that, actually. (Note, that over here in Europe
the new product ads have been launched in October or so, and that the old "free" version is said to run until June).
Why isn't it possible to fine-tune bids on product level? (Or did I just overlook that option?). Just a single column in the data-feed-file?
Do you think such an option will be implemented in the near future, or will it be worth to "squeeze" the system by defining separate labels for 10cent, 11cent, 12cent, 20 cent, 30 cent and so on?