On mobile, so apologies in advance if this is a dupe, but I didn't see it on a quick search...
I randomly browsed over to Timbuk2's website, and select colors of the Rogue and Tuck backpacks are $39 with free shipping.
MSRP of $79, and usually on sale for $59, and $49 even when using the special, 20% Amazon credit card cashback, so I think $39 is pretty slick.
As of this writing, I see one Rogue and three Tucks at this price. Other colors are a bit more, but not much. ($47)