I'm wondering if it is common to negotiate closing attorney fees due to repeat business for the CA. 

One common obstacle is dealing with higher interest rates compared to traditional financing, which can impact profit margins.

This is fairly common within the industry and a way to reduce administrative costs considerably since you’re not repeatedly negotiating the base terms and conditions of the contract.

What are common practices to remove them?  

Is this common problem in older homes in Texas? 

Common expenses would be utility mandated SCADA upgrades for system isolation, metering packages, engineering & testing, etc.

Even if they do, they may not hear your message enough to fight against the message of "low—and no-money-down" most commonly shared in the forums.

It is very common for tenants to be nasty when the air conditioning goes out.

Interestingly enough, its a lesson quite commonly adopted by real-estate investors themselves.

Lastly, it's common for the Buyer's Broker agreement to have a clause that stipulates the client will owe a commission for property which is covered by your Buyer's Broker agreement if you agree to a purchase agreement within 60 or 90 days of the expiration of the agreement.