You are asking me to make a subjective judgement on servos I've never owned, so I can't really spend your money effectively for you. If I needed 11 servos I would certainly only first buy one of these cheap ones to see if they actually will perform in your specific project, before committing to buying ten more.
I was used to paying $20+ for standard R/C servos for several decades and the best ones would sell for >$30-50, often including metal gear trains, ball bearings rather then sleeve bearings, higher quality feedback pots using conductive film and high torque motors, etc. You tend to get what you pay for in this world. Now the Asian electronics revolution has driven prices down so the old price guides don't necessarily apply these days, but again without first hand experience with under $10 servos, I've would be cautious.