I got an email from ComCrap(Xfinity) saying I need to replace my docsis 3.0 modem. It will not be supported sometime in Mar 2023. I had some severe network slowness recently so I had a tech come out and check my equipment and cables. He told me they are still offering docsis 3.0 modems and did not hear that they will be obsolete soon. Docsis 3.1 modems are not cheap. I would rather not have to buy one but if I do are there any decent ones for under $100? They all seem to be around $200!!!! Help out a cheap (poor) old guy....