Help find a domain name for me SaaS?

I'm working on a blog SaaS targeting small business owners. The domain is fairly important because their blogs will be hosted on my domain like example-business.mydomain.com, unless they point their own domain to it. For that reason I also want the name to be pretty "generic" like acme.blogspace.com sounds more professional than acme.elephantblog.com or something.

Anyway, I settled on the name "Blogbase", as its simple and generic yet memorable, also every domain except the .com was available and the .com has a minimum bid of $200. So I put in an offer on blogbase.com and bought blogbase.app in the meantime. But now the .com owner put the price of $5000 which isn't going to happen.

So now my options are:

1. Go live with blogbase.app and hope SMB owners don't care
2. Stick with blogbase but use a different tld than .app
3. You guys help me find a good .com name!

Any ideas or advice? I dont mind spending a little bit but would rather not go over like $500 for a really good name.