I don't understand what's this obsession with using coupons? Are you really planning on doing any serious PPC, when you are not even willing to spend $100 out of your own pocket?
That $100 will get you absolutely nowhere, especially if you are new to PPC advertising, whether it's Bing or Adwords. If you don't have the money to spend, then you'll be much better of focusing on other methods, because chances are that you will need to spend at least $500-1k until you have figured out what works and what doesn't.
And that's a best-case scenario with NO guarantee that you will have a profitable campaign in the end.
As for setting up multiple accounts and then trying stupid promotion methods with thousands of irrelevant keywords bidding $0.05.....really? In 2018? You need to stop thinking that you are playing a video game and take paid advertising more seriously, because at the end of the day if you want to make any decent, reliable income by using Bing Ads, then you have to treat it as a real business, including the products that you promote and the advertising techniques you use on Bing Ads.
In short, if you don't have at least a few k's to spend and you're not willing to set up proper targeted campaigns with relevant keywords/ads/landing pages, then just don't bother, because you'll be wasting your time/money.
