I understand that some people prefer not to say too much and prefer to read, hence they may have a low post count. However, rules are rules and it's easy to get to 250 just by sharing some of your experiences, photo's and more importantly, helping others.
You need to consider, selling things on here is a
free service to those who follow the rules and maybe a group of people who already own Omega's is probably not the audience you actually want.
There are many selling sites which will allow you to advertise your car without a post count, you just need a little cash or use a free service like Gumtree. If the car is anything special or cheap, someone will probably link to here anyway.
EDIT
Just noticed the title. Maybe you should step away from the computer and smoke a funny cig or two, that'll raise your pot count