Bugs in template. jQuery and Wordpress

Bugs in template. jQuery and Wordpress

So I want to build a website. A girl from around this forum advised me to buy a template from templatemonster. But here I found some reviews that their templates sometimes have bugs. So if I give you a link to a template, can someone check the code. Before I’ll buy it and spend some money? Or if someone from around here has the experience with their company, can you share it? What’s your opinion? Are they good? And also can I use jQuery with it?

Here is the template I want to buy wordpress-theme.