I have bought a set of router bits on Amazon,
https://www.amazon.com/Proburs-24pcs-Professional-Multi-Purpose-Wood-Working-Assorted/dp/B07588R2XX/ref=sr_1_3?ie=UTF8&qid=1517558529&sr=8-3&keywords=proburs
This quality is awesome, and the price is fair enough...Maybe you can have a try.