For prices, it's more convenient to visit Namecheap's website. I'll only add that:
Promo for registration is limited to 5 domains, promo for transfer is limited to 50 domains.
The promo codes for registration and renewal are different.
$0.18 ICANN fee not included.
All deals this year are active until the end of Cyber Week (11:59 PM ET on Friday, December 6).