Is it possible to purchase an entire Limited front seat from the dealer?
 

I called a dealer today, looking for a quote on the cost of a new leather front seat for a Limited 2006 WRX. He told me its only sold in components and not as an entire seat. Anybody got any info on this?

That could be possibly true since entire seat assemblies don't go bad, just part of them do. For that reason, one will not come fully assembled. If you have the factory seat all you really need would be the seat cushion and seatback cushion. More than likely the seat tracks and hardware will be swappable.