u/Hawkoffreedom

I have a 2021 Nissan Titan Pro 4x. I am getting ready to get the transmission fluid changed in it. It has 63K on it. So, the Dealership quoted me $400 to do the work. So I thought I would shop it around. The other two places quoted me $800 saying its due to the fluid type. Has this happened to anyone else? Am I being stupid by having it changed? Is that price difference normal between a dealership and an transmission service shop?