Product listing strange behaviour

http://www.acq uatua.it/gasatore-acqua
http://www.acq uatua.it/everpure
Hi,
I would like to understand why the product listing in the two links above have a different results in lay out.
In one link the yellow button (acquistalo-buy it now) appears together with the blue star (spedizione gratuita-free shipping) in all products and it is correct.
In the other link if the blue star is present the yellow button do not appear if there is the blue star (go down to the end of the page).
The yellow button should always appear, while the blue star should appear when the free shipping is set in the products catalog without making the yellow disappearing.
Please let me know what you experts think about.
Ciao from Italy.

enzo

I suspect that "leggi ..." means "more" and if a product has attributes then the "leggi ..." is presented as the options have to be picked

Thanks for your answer, actually you are right, I found a asnwer in another thread and I did comment. http://www.zen-cart.com/showthread.php?169416-No-Add-To-Cart-Button-on-Product-Listing-Page&p=1194896#post1194896
ciao ciao
enzo