The wife and I talked about this same thing when we were considering the CVO. The reasons we decided to go with the CVO Streetglide vs a standard Streetglide were:
* custom paint job
* painter inner fairing
* chrome control housings
* chrome shift linkage
* nicer chrome lower brake and shift levers
* chrome clutch and brake levers
* chrome lower forks
* nicer chrome brake rotors
* nicer grips and footboards
* nicer seat
* included backrest
* high flow air cleaner
* rear bag fillers
* stretched bags
* lowers
* nicer stereo
* larger engine
* nicer wheels
We figured that if we added these features, which we probably would anyway, to a standard Streetglide we would be getting pretty close to the CVO pricing. We already knew that we would be adding pipes and a tuner, that's just a given going in.
Since owning the CVO we have only added a set of cams & lifters, pipes/tuner and 12" Yaffee bars. I only added the cams & lifters out of all the concern over heat and we bought a chopped tour pack for long trips.
My brother bought a standard CVO and has already added the following:
* Cams, lifter, pistons, heads and throttle body (to keep up with the 110

)
* custom wheels
* chrome shift linkage
* painted inner fairing
* chrome lower brake and shift levers
* chrome brake and clutch levers
* chrome control housings
* chrome lower forks
* grips and floorboards
* High flow chrome air cleaner
* backrest
* a ton of misc chrome pieces
* bars
So far he has about $8,000 in it and is looking to do a paint job. My older brother will be doing the work. But even with free labor he will have about $2,000 in paint stuffs. Plus he wants stretched bags.
So for $10,000 more than a standard Streetglide my brother will have about $10,000+ in extras to achieve the same.