Yo guys so I created a video on how to make a 2x31 3x25+ breed.
Please check out the video description for more in dept explanation!
There is a part in the video where I didnt explain what to do to get the Dratini, so PLEASE check out the description!
I also spend 200-250k on this breed alone, the price may vary depending on what you breed. Furthermore, I used magikarps in the video as I am familiar with prices and had worked with them before
I hope it helps people out, and I am sorry if breeding services are not as profitable.