The usual streetwalker picture is at the top of the article.
The author of the article seems to be comparing advertisers, nort and south on the. EI. website only.
Armagh and Newry have smaller populations than Limerick.(and are within striking distance of Belfast).
Derry has a comparable population to Limerick but being in the UK will also likely have sex workers advertising on Adultworks and other sites(including a specific Northern Ireland escort website). So numberswise the author of the article is likely not comparing like with like
As in EI being the main website in the South but other popular websites operate in or serve the North.
And in my empirical view, numbers in Limerick have certainly not burgeoned since the NI legislation of June 1st.
One time, Autumn 2014 saw 84 EI Limerick ads.
At the moment seems to be staying at 55 to 65 or thereabouts.
10,000 years of Middle Eastern civilisation and the place is not at peace but rather in pieces.