Square Trade warranty cost varies GREATLY depending upon what you enter as purchase price:
$500 purchase price (Value) = $89 warranty cost
$175 purchase price (Woot) = $29 warranty cost
If your unit needs repairs, well that is what warranty is for. If it needs replacement (totalled?) do they limit you to your cost, or to unit replacement value?
Never mind: found it on Square Trade page ==>
For replacement payments: You are covered up to the maximum value you paid for the item. Once we pay out that amount, your Care Plan is considered fulfilled. If you would like coverage on your new item, you need to purchase a new warranty for it.
For Repairs: The Care Plan is good for multiple repairs, up to the maximum value of your item. Once the cost of repairs meets the full purchase price of the item, your Care Plan is considered fulfilled.