If you don't want the "tacti-cool" look, just visit your local thrift store, and check out their bag area.  All kinds of satchels and various sized computer bags show up in mine all the time.  I actually bought one for my computer, a Dell bag (fits my Dell laptop like it was made for it, LOL) like new, for about $4.

ETA: I dropped by my local thrift, and they had at least half a dozen of computer shoulder bags and satchels, none more than $7; all nylon, and all in black.  leather satchels don't last long, as folks tend to snatch them up, thinking they are premium stuff.  Depending on the quality of leather/stitching, might be, or maybe inferior to a well-made nylon unit..  

Examine each prospective purchase closely, inside and out, hose 'er out, sun-dry, attack loose threads with a bic lighter, and there you go for dirt cheap.   Some of this stuff, if carrying a brand name, like Dell, is VERY well made.  Off-brands/no-names can be good, or maybe not.  Like I said, examine closely, all over.

While Maxpedition stuff is well made, and sometimes user-configurable, most often it screams "Shoot ME First", and is not cheap.  Good stuff, and the MSRP is reasonable for what you get––if that's what you want.  Look for sales.  In the end, for Maxpedition -level of quality, you are paying for overall quality/durability, and features.  this is what to get if you will beat your item through constant use, and cannot affort it failing.  OTOH, a name-brand computer satchel, like a Dell, is easily same quality as Max, and mebbe 1/10 the price at a thrift.  Your call.

LAPG BOB Bag is IMHO of somewhat lesser quality, but still a decent alternative, given its' low price.  Decent quality, but a Dell brand computer bag, or a Maxpedition will last long after the LAPG is worn out.  Got 2 of the LAPG BoBs when they were on sale for $10 per, and it was a good buy.  At current "Sale" price of $20 per, still a decent buy.

To sum up, check upt the thrifts that are local to you.  I have one about 10 mins from me, and I've gotten some screaming good deals there.  For instance, an LL Bean Baxter State Parka for $20, and a Blackhawk pack (MSRP over $200) for $7.  Lots of other stuff, like North Face fleece jackets (MSRP over $150) for $8 per, and even the occasional tactical gear item.

I can highly recommend the Maxpedition Jumbo.  Keep in mind the product is offered in a large variety of colors so if you would prefer a camera bag look rather than tactical, that's no problem.

I bought one just for day outdoor adventures, a place to carry a gun, my camera, and a first aid kit, and surprisingly it now goes, mostly in my car, everywhere I go.  It now has handy things like a couple flashlights, multi-tool, pen, etc. but also has enough stuff a fairly comfortable night in the boonies too.  Other than the night in the boonies stuff, it actually comes in very handy.

Tj

I broke my shoulder two years ago and I needed a man purse because I only had use of one arm for months.  At first I expected funny looks but I carried my Maxpedition Jumbo Versapac and I don’t think people really seemed to notice at least not until I had to find my wallet in there to pay for something

I haven’t carried it again since but while I had it I carried all kinds of stuff.