You can find your target coin to use www.tradingview.com/cryptocurrency-signals/
1- Change 'TIME INTERVAL' what you want.( I use 1D OR 4H )
2-Filter the exchange what you are using.
3-You can filter whole thing here.
Use this window to set your filtering settings.
4- The easiest way to find cheapest coin is filtering close value.
You can filter close value for bollinger lower band.If you filtering for this , this application show you only coins which closed current value below bollinger lower band.
I prefer MA50 , MA20 , BOLLINGER BANDS ,ICHIMOKU CLOUD BASE LINE to scan my target coins.
After find your target coins , I recommend look at the chart.Because this aplication alone is not enough for analysis.
NOTE: IT IS NOT A FINANCIAL INFORMATION . PLEASE DO YOUR OWN RESEARCH.