I paid $2875 for a complete '57 Bel Air original style interior last September from Ciadella, and it took just 20 days from order date to delivery, even though their web site suggests 4 months.
Gina said they like to "jump on" orders for '57s.
Shipping was $297 from AZ to WA, but the shipping cost also included a complete set of seat foam, front and back (for an additional $700).
The complete interior included the vinyl covered package shelf, carpet and padding, and loose material to cover the front seat shells, arm rests, and lower rear side panels.
It also included the headliner, front door panels, rear upper side panels, windlace set, two visors, the rear sewn arm rest covers, seat back buttons, hog rings, burlap, and extra door panel nails w/clips
It did not include the trunk divider and mat.