You can reorder based a previous order if you're logged in to your online account. Just follow the steps below:
1) If you're not yet logged in, click on log in from the top right portion of the page. This is normally on the left side of the CART icon.
2) Once logged in, click on ACCOUNT which sits on the left side of the cart icon, and click on MANAGE YOUR ACCOUNT.
3) Click on the order number (PP#) for the order you want to be reordered.
4) Click on ADD ALL ITEMS TO MY CART.
If you want to browse ALL items that you have previously purchased online, you can click on the FAVOURITES tab instead and add them as you see them.