Fiverr Clone - Different approach

Hi Guys and Gals,

Well i´m seeing the huge success of Fiverr since was the first one to arrive, then only gigbucks get a few coins of the market, then the remaining clones do not have great success at all. I sincerely believe that is because everybody focus on the same niche and same business model.

So i have learned a bit with that and i´m preparing a Fiverr Clone dedicated to the offline market in my country, native language, etc.

I´m thinking in something like local required services, like plummers, Cleaning ladies, painters, etc...

I was thinking in a business model as low as $5 to $500 with comissions from %20 - 5%-10%

but my main concern is more about the gig itself, because local business want to put the gig and try to send an e-mail or phone call to contact the buyer, doing that i will loose the gig price, since everything will be off the site and i will loose my comissions.

For ex. a painter puts a gigs Saying: i Paint a Room for $100 for ex. if he can contact other way instead PM since the fiverr clone will be the "middle man" will be cut off.

So my question will be how can i avoid this measures, because in my country everybody will try to do it

I was thinking to prohibit to insert numbers and or e-mail addresses but what other kind of approaches do you believe that i can use to have a good success rate.

There is any chance of using the Fiverrscript and charge a price for the GIG itself dor some specific categories? i have view the demo but did not find these kind of customization, any idea?

Thanks,
Morg