So, you just finished making your order, you've clicked the pay now button, and DOH! You forgot to add that one extra part. Never fear! We've added a new shipping option just for you! Just place an additional order for the new parts and we'll add them to your previous order for no extra charge when you choose the new shipping option labelled "add to existing open order" as long as the original order hasn't shipped.
"Ya, but how do I know if my other order is still open?"
Easy! We send out a shipping notification and tracking information. If you have received that for your original order, then its too late!