I just went thru signing up for Comcast internet at Best Buy. $95 for a modem and comcast installation kit. The kit was a splitter, a couple cable patch cords, and software. The entire cost was refundable thru rebates, but BB gave me an expired rebate form for the install kit. Took it back and got my money back. The Motorola modem rebate checks, $80, were in my hand in 3 1/2 weeks.
Just got my first bill from Comcast. They billed me full price + $3 to lease a modem. After talking to them I got an extra 3 months @ 19.99 and the modem cost dropped. So far, except for the monthly cost, Comcast cs has been the best I've dealt with for a while.
My next move is to get rid of the basic cable ($50) and go with the limited basic plan. $19.99. Then sign up for Netflix.