I would imagine that, for FS, all she needs to do is lie there.  But to give a BJ, it takes much more work.  Why do you think FS costs more than BJ?

Oral sex and FS = big difference

One, it can be argued is just a starter and the other the main course. Obviously with a few exceptions.

imagine urself as a gay duck...
would prefer to suck some guy's dick or let him fuck ur ass?

or.....would u prefer to fuck the 3 papayas in your avatar or suck the papayas?

i would eat them....

It's just the way the world turns my friend.

Because FS comes with BJ?

who says BJ takes more work than FS?  do you get dead fishes a lot?

Never had a FS without BJ ...   
thought as mathamatical equation it would look like this ?  FS = BJ + ML  

you dont have to spread the leg and let the guy ram you.

Like when you going out with your GF, it starts with getting a BJ first... then work you way to actually doing it maybe a few dates later.

Its the easier option. Yes it might take more work, but its sorta less commitment.

Ok ok, I think we are getting too unfriendly with the replies here. Here is my humble opinion.

I think that it is harder for a girl to get a guy to cum when BJing unless she is super ultra orally gifted. I have met girls like this and it requires deep throating, lots of saliva sucking, and with the right rhythm.

As for the FS, I think its easier for the girl to ask the guy to fuck them missionary and for them to lay there and just collect when finished. Most girls dont like to work for the money and since 8-9/10 men are not porn star emulators like myself, they dont make the girl work.

So the conclusion would be that why give oral service if most of they are not gifted. Especially when an oral service can take up to 30 minutes for me. Imagine sucking on a popsickle for 30 minutes. Shit, wouldnt your mouth get tired?

I think if I was a girl, Id rather lie there and get fucked and not blow on a dick for 30 minutes.

Bro, I dont think things are "too unfriendly", that's just Bros having fun. However I agree about the BJ being harder work for a WG in most cases. Of course it depends on the Bro but generally speaking, a few fake moans and a an occasional pelvic thrust seems like it would be easier than having some Bro she just met's dick in her mouth.

Why not go to the source and ask the girls. I've had woman who put as little effort into there BJ's as their starfish sex.

Personally I think the main reason that FS costs more than a BJ is that guys will pay more for FS. End of the day it's all about the money.

or just maybe from POV of a WG, pussy is more sacred than mouth. So if u want to poke my pussy hole, you pay extra.

or Old school thought, penetration = sex. Oral BJ is modern definition and does not constitute as pure sex according to them.

Back in high school, I had a GF who only gave me BJCIM but refuse to let me in her sacred hole.....

I hope I'm not letting out your secrets Bro but you ARE Bill Clinton right???

Sounds to me like she was preserving her virginity for mister right or at least for the guy with the coolest car at the prom.

I've also heard stories of girls who'll let you in the back door, but front door's off limits for the same reason.

FS is like the main course.  BJ is like appetizer.  Even if appetizer taste good the main course is always more expensive.  =)

i have had FS w/o BJ.

BJ is not real sex according to Bill C so thats why its cheaper.

My view is that it is because the customer (us guys) is willing to pay more for FS than BJ. If we are willing to pay more, why should the girl charge less? Say you want to do FS and the girl insists that you have to pay more than the BJ price, most of us end up paying the extra amount.

If you asked your WG to give you FS without BJ, will your WG give you a discount? I don't think so. Therefore with your formula stated that FS=BJ + ML, but without BJ it will become FS=ML. So I guess BJ = 0 or I should say that BJ is always a free service when we talk about FS. But if you specifically asked for BJ then the value of BJ <> 0. So the conclusion is FS <> BJ   ... damn...math+sex=headache