I bought positive SSL @ $7.49 per year a year ago, Satisfied!

https://certera.com/ssl/comodo/comodo-positive-ssl i have also another cheap option like https://cheapsslweb.com/positive-ssl but I decided to go through the first one 

For the most cost-effective code signing options, consider purchasing a certificate such as Certera Code Signing or Comodo Code Signing. Moreover, if you choose multi-term like (3 years) it will be cheapest ever. This can provide significant savings, especially if your budget is under $300. I hope this will fulfill your requirements!