I too have looked at these and just don't get it, particularly the shorter ones, there is one being billed as "Christmas in New Orleans", it is actually on the first week of December, priced at $3,500 per couple. This is a tour where you are parked in the same place for 7 days, and they shuttle you around the city, featuring the usual New Orleans tourist stuff, french quarter shopping, beignets at Cafe DuMond, and dining in some known name places (1 meal per day, usually lunch). A quick estimate as a DIY I would estimate $70 per day for prime RV campground, $30 per day for taxi service to and from the tourist areas, lets say $50-90 per day for lunch OR dinner for 2 at world class dining establishments, perhaps not the most expensive ones, but it is New Orleans finding good food is not a problem. Lets assume another $60 per day for tourist stuff, admissions, etc. so as a DIY $230 per day plus expenses you would have either way. $230 X 7 = $1650 This is being generous as the itinerary for day 1 is a social and welcome dinner, and day 7 is a goodbye breakfast, so the reality is this is a 5 day 7 night tour and so the DIY version should be a couple of hundred dollars less.
This is all for what, this is a ZERO MILE tour, you have to get to New Orleans on your own, it is billed as a Chirstmas tour, but is the first week of December, which is likely the one of the slowest tourist times for the city, the tourist things to do may be nice enough, a few of the dining places may require reservations (suggest) for dinner, but even that is often not required on a week day night, and that is about it.