Greetings from the Florida Panhandle
First off, welcome to the Forums. We're glad to have with us.
As to your question, I would get a price from the Airstream Factory Service Center in Jackson Center. Then get a price from another RV dealer as awnings are pretty generic. If at all possible, go with the factory. They always do a good job.
SuEllyn & Brian McCabe
WBCCI #3628 -- AIR #14872 -- TAC #FL-7
2015 FC 25' FB (Lucy) with HAHA
2005 Suburban 2500 Quadrasteer (Olivia) & 2011 Silverado 3500 (Fred) with Outfitter Truck Camper (Ethel)