Help me assess the value of lithium

[scottfelt]

Hi folks. Very new to all of this and don't even have a unit picked out and have never owned one. I have done some reading to educate myself. So, thinking long term value and flexibility, I can clearly see the argument for a lithium system. I do know they cost more up front. However, in the articles I've read, they are comparing the cost of a lithium battery (say, $1300) vs the cost of an AGM batter (say, $250). My problem is that when I look at new class B rv's, I see a $20-$25k premium to have these systems. Can somebody help me understand what else drives this cost? And, knowing how RV dealers and manufacturers inflate the cost of everything, what is a fair mark-up? Like, if I negotiate the cost of the coach without lithium and get it to price $x and then say, ok, I want that but add lithium, can I expect to get it for less than the $20-$25k? Thanks for all the help. I'm sure I will have more questions as I go down this process of deciding what to get.