I am new to Toribash, I started yesterday. I want to know when the shop restocks, because I would like to buy a full orc set, but the shop is out of stock. How often does it restock, because I am bored waiting for it.

Check the market for orc items, it's faster and cheaper than waiting for a restock.

The torishop restocks on the first of every month.

As Alaistier said, if you want to buy things that are sold out (like orc), buying them from the Market is much faster.

Alaister, orc and chronos is more expensive in market than in torishop :|.

Anyway, shop restocks at the first day of every month at 5 pm GMT if I am not mistaken(Not sure about the time).
However, they're sold out after like 15 seconds.

Edit: Firebolty, ninja much?