I'm pretty sure the space shuttle has been discontinued, hence it's unavailabilty at any of the official FP retailers, and the $80-120 prices on Amazon and other marketplaces. Wrong time to be trying to source it in bulk, frankly - many "series" type toys are discontinued over time; Imaginext is one example, the Brio wooden trains and sets are another good example. Schleich animal and fantasy figures go through product cycles and tend to shoot up in price once discontinued.
I mention this simply because, when you see a product with a $45 retail price on the manufacturer's website being sold for upwards of $100 on eBay and Amazon, chances are you're too late -- the people cashing in are the ones who got it before it was discontinued (could also just be a shortage, but given the time of year my guess would be it's been discontinued and just hasn't been updated at the FP site.)
Frank