We always start from the lowest possible bids, and there are reasons for that:
There is a thing that we are calling "overbidding". If you have a bid, that is too big for the auction, for example, mostly recommended $0.7 for all countries and categories, or $5, if you are like "I just want to buy more installs and faster", you are risking having much more expensive installs. The bigger the bid, the more expensive installs you will have. For example, one of our customers with a Utility app started a campaign with a $50 Daily Budget and a recommended $0.7 CPT Bid. As a result, they had 55 installs with a $0.9 CPA. After they changed the bid to $0.25, the very next day they had 140 installs with a $0,35 CPA with the same Spend.
Our best practice is to start from a $0.05 CPT Bid and to scale it by $0.05 or $0.1 at a time before you will have impressions and installs.
CPT Bid amount is not equal to an actual avg CPT price that you will pay. Your CPT Bid could be $3 and your avg CPT could be $1.5.
If you are using CPA Goal, for example $0.8, your CPT Bid could be $10 or even $20, but the actual avg CPT will still be about $0.5-$0.6. Don't, be afraid to push CPT Bid a lot in that case.
We have a feature called Quick Start on our Organization plan. It will automatically scale all the keywords separately until they will have impressions and installs, and it saves dozens of working hours. If you are interested in an Organization plan, just send us a message in chat or schedule a demo call with Asapty manager.