I order prototypes almost every week. Don't know if it is covid, but since spring last year Chinese manufacturers started to have various issues in deliveries. Quality issues included. Fabrication takes much longer. Now, close to the middle of Chinese new year, 5 days build time is more like 3 weeks.
I am not using those $0-$10 products, but spending more money does not seem to make any difference.
Thanks for mentioning PCBShopper. I browsed reviews and, unfortunately, almost all the manufacturers are getting negative feedback exactly for the same reasons I am struggling at the moment.
I think my journey with Chinese manufacturers is over. Anyone using Aisler or Eurocircuits?