The number of photos that can be published in the ad, depending of the Status of this ad.
Posting ad for free, You may post one photo. If that's not enough, then select a different Status of ad.
In the ads in "BUSINESS" Status you can publish up to 10 photos. Ads in "BUSINESS-PRO" Status may include up to 20 photos.
In the ads in "EXCLUSIVE" Status You can publish up to 50 photos.
Ads with higher status have other benefits as well.
Such ads have longer Period of publication.
But most importantly these ads have a higher Priority that raise its position upper in the the General ads List.
The Ads of "BUSINESS-PRO" and "EXCLUSIVE" Statuses are showen in the TOP-block what makes them maximum visible for potential customers.