Yep - ditto Prop. We just found out today that the oven in our reno'ed IP has failed. We got delivery on 24/4/08, with 2 year warranty, BUT tenants didn't move in until August (yes, we were slow...! )
So although we still have 4 days to claim warranty, technically the appliance wasn't starting to be used for 4 months after delivery.
Sell them on ebay with close to purchase price and supply all the receipts.
Include a link to an online store with the actual price.
If you've bought them with a big discount they could even sell for more than you've paid for.