My go to mixer when people want me to setup their audio is the AG03, every other mixer below it in price is basically hot garbage. Gives you a lot of control over your audio especially if you have multiple PCs or want console audio through your headphones. The USB input switch allows you to send only the mic in through USB, all inputs, or all inputs + USB loopback, very useful.
That being said it doesn't have the most powerful mic gain, I think it's something like 46dB, Shure recommends mixers with 60dB at the least for the SM7B.
Personally I believe the AG03 + the SM7B and a CL-1 is a great option.
Thomann is a great place to pick up brand new equipment for cheap, you can save around $60 (with sipping) on the AG06 + SM7B, however the CL-1 is surprisingly cheaper on amazon: