There are a number of companies that will do 30x WGS and give you the BAM file. I believe Nebula is one of them, but know there are other names out there.
Stay away from Nebula. I had such a hassle with them and after six months of complaining with mostly no response I had to threaten then with a civil suit and they finally replied "your sample was no good, here is your money back."
Nebula most likely ship your samples to China for processing and sequencing because it's so much cheaper. While that might not be a deal breaker for some, I would personally prefer my sample not be shipped elsewhere.
There are a number of companies that will do 30x WGS and give you the BAM file. I believe Nebula is one of them, but know there are other names out there.