And it can be harder than that. When I was negotiating, I was talking with two dealers. One had a MSRP that was almost $6K higher than the other. I figured "usual nonsense of inflating the price with worthless add-ons." However, after looking carefully, I found that the 32SA we ended up with had everything the other one did, plus built on the Ford 24000 chassis, not the 22000 the other one was on, had winegard ConnecT wifi booster, A CB antenna (whoop-de-do, I was a long-term HAM operator so CB is not exactly interesting in 2018). Had both a stove and convection microwave which my wife wanted (not so interesting after having the thing, no light in stove, pilot light, pretty small, probably better off with the two extra drawers under the cooktop.
In any case, the MSRP they were quoting was real, which left me with a better taste than dealing with someone that you can't believe anything they say. Here I can at least believe something every now and then.