The practice of omitting cents and using a dash to represent rounded prices is not a universal standard. It varies across different regions and cultures. In many countries, prices are commonly displayed with cents, and the use of a dash may not be a familiar convention.

If your target audience is primarily local and accustomed to this practice, implementing it in your templates could make sense for a more familiar and user-friendly experience. However, if your shop caters to an international audience, it's advisable to display prices in a way that aligns with broader expectations, which typically include showing cents.

Always consider the preferences and expectations of your specific audience to enhance their understanding and usability of your e-commerce platform.

Making your own translation is a cool idea. In those inputs, you should put your language code and the language name, like "en" for English.

It really depends on your needs. WordPress is great for flexibility and content, but AbanteCart is focused on e-commerce. So, if you need a full e-commerce solution, AbanteCart might be the better fit.