The site you recommended is very good, but a little pricy, it’s $79 for 10 minutes of DSLR clip. They have this “Treasured” free diagnose software that let you see the clip which is awesome.
But since I’m Chinese, my cousin found an online service store under App “TaoBao” (A chinese online platform that has all kinds of stores selling merchandises or services) who does the same thing. I got a 9 minutes clip repaired for 100 RMB, which is 15 US Dollar:) But they only communicate on TaoBao or WeChat, and they don’t use Google Drive, etc. only take files uploaded via the Chinese web “Baidu”. And payment is something called “AliPay” which is the Chinese version of Paypal. If you have a Chinese buddy, this can be done.