https://arstechnica.com/information-technology/2018/05/comcast-charges-90-install-fee-at-homes-that-already-have-comcast-installed/

Comcast is making it difficult for many new customers to avoid paying installation fees—even if they purchase their own modems and are willing to set them up themselves.

Based on our tests, signing up for standalone Internet or TV service on Comcast.com often requires payment of a $59.99 or $89.99 installation fee, depending on where you live. (The fee was $60 in two Massachusetts suburbs and $90 at homes in Houston, Texas, and Seattle, Washington.) In cases where the $60 or $90 fee is charged, the fee is required whether you purchase your own modem or rent one from Comcast for another $11 a month.