Osprey has select Osprey Backpacks on sale from $48 (listed below). Shipping is free.
Osprey Arcane 18L Top Zip Day Pack $48
Osprey 22L Cyber Day Pack $58
Osprey 30L Bitstream Day Pack $62
Osprey 26L Pixel Day Pack $68
Osprey Scorpion 43L Hiking/Camping Backpack $99
The following is no longer available
Osprey Arcane 20L Large Day Pack $48