Dicks Sporting goods has this for your price range:

Schwinn Adult GTX 3 Hybrid Bike | DICK'S Sporting Goods

It states it has the Altus rear derailleur. The only real concern I have with it, is the front suspension does not have a lockout. They do have other bikes you may like as well.

Something I did with my Wife's bike, because I couldn't immediately afford it and didn't want to use my credit card, I put it on layaway. (I couldn't afford it since we just put a huge amount of money into her motorcycle).

Normally LBS will do layaways for 3 months before requiring it to be fully purchased. Just an idea that it might be helpful if you want a more expensive bike.