Cheapest could see anywhere including delivery of 6 pounds when choose 5-7 day delivery. Very good reviews in camera magazine and also on youtube if you want to have a look. Just ordered one myself :) can pickup in store also for 24.99
Go all day with the lightweight, comfortable Fastpack 100 backpack. It protects your digital SLR compactly while providing generous storage for your other gear. Side-entry compartments let you quickly grab equipment and accessories, even while you're on the move. Customize the easy-to-access main compartment with adjustable dividers.
1 DSLR with compact zoom lens attached, plus an extra mid-range zoom lens (18-200mm f/3.5) or flash unit, audio player and lots of personal gear
Size(Interior): 7.3W X 5.5D X 7.9H in./ 18.5 X 14 X 20 cm
Size(Exterior): 8.7W X 7.3D X 16.1H in./ 22 X 18.5 X 41 cm