Zero if possible, if you are still keen on them, be VERY VERY careful and cautious.
1. For weeks I could not log in. always error signing in. even their own guys could not help. 2. This week, I discovered my whole account has been deleted - could not even log in with my email. And I have purchased two multiple license wordpress themes. Emil.d*****@yahoodotcom - if the admin or support sees this. I sent a support email demanding answers yesterday. No answer - 7 email addresses - no answer. Based on my experience, I recommend using Themeforest. Ironically, I left themeforest for TemplateMonster - but the problems are TemplateMonster are worse than Themeforest. At least at themeforest, you get to get access to your account with help fronm their admin or support. Absolute tragedy! Skip, skip, and if you still insist - be VERY VERY wary and cautious.