What is considered a reasonable time line for Support?

Once purchasing a plug in that says it includes support, what would be considered a reasonable time line to get help? I was able to chat with the person up until I made the purchase. Which is not working on my site and now I get no reply. (unless of coarse I pay more money which was not indicated prior to the purchase) My site is basically useless and my designer wont help and I cant seem to get any assistance.
Thanks in advanced!

Envato encourage us authors to reply within two days but usually replied instantly within the day. If the item is supported you will get a reply soon.

Cheers!
phpbits

Thanks for the reply phpbits! So I am not crazy by thinking 1.5 weeks and no response is a little long.
Who would have thought getting this (easy) task completed would be so difficult.