The forum rules do, in fact, state this:
"Include enough information to help you move your stuff, pics, price, location, condition – all stop people having to make guesses then being potentially disappointed."
Rest assured that the level of interest will be minimal without the above information. I'm sure that most of the people who read the forum and see ads with statements like, "Low Low Miles at 150K Excellent condition, Very well maintained. A collectable and an absolute joy to drive." immediately assume that the seller has unrealistic expectations of the value of their vehicle and move on to the next listing.
For that matter, if you want to ring all the bells, don't forget "ICE COLD AIR", too.
This is not a critique, it's constructive criticism, so please take it as such. From running online MB forums for nearly 20 years I can tell you that ads without prices rarely have inquiries.
After all, what do you have to lose by posting the price here? Why wouldn't you?
I have a good friend in the MB business in OK City who might be interested, but I'm not going to waste his time or mine passing the information along, as I know his first question would be, "How much?"