BECAREFUL WITH TEMPLATES... I know that Zen Cart has their own templates on their addons section, but purchasing a template is muddy waters.. When you buy a template, you have to make SURE that they are using the most recent version of the Zen Cart code. Lots of template providers (template monster and the likes) will have a template that tehy have been selling for 5 years and instead up upgrading every time Zen Cart upgrades, they just leave it because people buy them not knowing..
The other issues with purchasing templates is support.. MANY templates from those providers completely hack the code structure, so that means when you go to install an addon and it says put "this" code in the header.php file and you go into your files and there is no header.php instead you have application_top.php, panel_top.php, Top_column.php you have to figure out which file it is supposed to go in.. AND you cant use the zen cart support forums because those people support the stock version of zen cart, not the template version..
Also, sometimes witht he combination or old code and hacked file structures, you will get certain addons that just plain will not work,
I have found that with a bad template, you actually have to be a MUCH better coder than i will ever be just to get it to WORK, let alone add to it..
Just some food for thought..