I pay $47 w/o video services in Upstate SC. 10mb service, however it is up to 10mb service, I have never got a speedtest.net result higher than 6-7mb, but when I had the 5mb service, I never got higher than 3mb on speedtest.net and 5mb service is $45 here, so $2 extra wasn't a biggie, nor was it a promo.
I have been paying $47 for almost a year and a half now.
Keep in mind, Charter Sales Team (the CSR you get when you call in) will only tell you about the prices that they can make the best commission off of. Example, a $55 internet package may get them $4 in commission whereas a $47 internet package will only get them $1.75 per sale commission. There CSR's are horrible and will do stuff like this to you. Its always best to get to the retention department and threaten to cancel.