most of the time, you DON'T add value for most options, because they aren't truly "options".
adding value for a oven or awning, for example, is wrong because nearly all RV's come with them. the manufacturer may list them as "options", but they really aren't. you'd have to specifically request that it not be added at the factory, for the build.
only items like aluminum wheels or a larger/extra a/c, could be an added value.
most are advised to simply not add any value for options and just go straight to the basic value of the RV.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC