Did a little test, this wasn't done on a paysite on a join form but instead on a gallery page between the first and second row of images. Text only link leading to a tour, no banner or any image besides the gallery pics. Each phrase was followed by the site name that the gallery pics came from, for example "View more at Paysite Name".
As you can see, mentioning how cheap the trial costs, even if it's only $1, doesn't help at all, in fact quite the opposite, it hardly gets any clicks at all. However simply mentioning where to get more similiar pics seems to be the best way to get them to click through.
Phrase Clicks
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