ADT Pricing Question

tl;dr: How cheap can I get ADT monthly down for 1 year with no hardware needing to be purchased?

I’ve read through the replies here on how predatory ADT is and I agree with the responses. I don’t want to try and defend ADT or their tech. My situation is not unique, just coming at it from another perspective and am wondering if insiders can answer.

I just bought a rather large house and the previous owners had a very large ADT install with the latest wireless sensors, repeaters, and multiple command center tablets. I don’t even know the full inventory. I wish they didn’t have all this gear because now I eventually have to remove it all.

When they sold the house, they didn’t tell me, but they were very much hoping I would sign up for ADT, which would release them from their balance. I initially said okay with a $25 fee to have someone come over, transfer it to me, and make sure everything is working. This seemed reasonable until I read the contract, so I canceled the install and never signed anything. The previous owner had to pay off their balance, and I’m locked out.

So now I’m left with a new ADT system that I’m locked out of. I’ve tried all the pin codes that I’ve seen in this forum with no luck.

My question is this: What is the absolute cheapest monthly fee I can try to get with ADT and the shortest contract? If I could get this working for $25/month for 1 year, that would be worth it to me to give me time to save and plan for a proper system. I want to do this properly and not rush it; I just don’t want to do it now.

I know the responses will be to get rid of it, which I agree with. I just want to see how low of a price I could actually get this working considering there are thousands of dollars worth of gear sitting idle, and I don’t have the time to design a system for 6-12 months.

Thank you for your response and sorry in advance for yet another ADT thread!