If you think that quote is expensive, wait until you put your eBay system together... then start running into headaches with busted gear, parts that aren't what they claim to be, exaggerated advertising claims, and useless post-sale service.
If it's a reputable integrator, that quote will include warranty on the installation itself, and plenty of after-sale support and service.
One of our major clients is an upscale restaurant chain, so I'm quite familiar with the type of systems suited to these things. The last site we did was about 120 seats, and we ended up with 30 cameras in the design (and two more added after they opened). Of course, it WAS two floors, and these guys want 100% coverage of public areas: they went the cheap route before, with crappy IR bullets in a few "junction points" and a few in the kitchen... then found too many incidents were getting missed, and what they did record, wasn't very good quality.
Will need for sure at least 1 if not two heavy duty, high quality, long reach-capturing outdoor cameras.
Most of my options lean towards getting a decent/satisfactory system off ebay. I'm not in the mood of grouping parts from here and there, and trying to make up my own system. I rather just buy one decent/average system which will still provide me good quality and have all the parts that I need in one package.
"Package" systems have issues of their own, not the least of which is the fact they don't suit specific cameras to specific needs... something that's particularly important in a retail situation. They also tend to be low-quality cameras with lousy low-light performance (which can be critical in a restaurant) and compensate for it with cheap IR.
What are the Pros and Cons/differences of having a Dvr recorder compared to recording on a PC-tower?
This has been discussed and debated extensively here. In general, PC systems tend to be more configurable and flexible in the long run, especially when it comes to adding storage.
Should I be concerned with the whole digital/megapixel vs analog cameras? Is there that big of a difference? I want to be able to stream the videos live off of my wireless internet signal when I'm away from my business if that helps.
Here's an analog camera recording at CIF resolution (352x280) in a liquor store:
Here's an IQEye IQ511 1.3MP camera mounted right above it (click for full-size image, as the forum shrinks it for display -note the cheap dome in the bottom-left of the frame):
Over in their attached lounge, this is the same model cheap dome recording at D1 (720x480):
And this is the same model 1.3MP camera mounted right beside it::
In our latest restaurant job, this is an analog camera recording at D1 at one end of the upstairs lounge:
And this is a 2MP dome at the other end of the lounge (again, click for full size):
Does Sony produce any good systems/cameras ?
I don't know if Sony makes CCTV cameras at all any more, and even when they did, they were mid-grade at best. When you see "Sony" listed on eBay cameras, 99.999% of the time it only means the image sensor itself is made by Sony - it's probably a low-grade sensor, and that speaks nothing to the quality of anything else in the camera: there's a LOT more to what produces a good image than just the name on the sensor.
Also why is Samsung looked down upon when it comes to their DVR, CCTV systems?
They're traditionally not very good.
And here's a megapixel one, that seems good. Only thing is that it's much pricier than what I can spend :
That's only a four-channel system, vs. 16-channel for all the others you've listed. How many cameras do you actually need?
Honestly, you're not going to get ANY level of quality from 16-camera package without starting near the top end of that price range. A number of cameras in the $100 range that should do for starters, and a few different 16-channel DVRs that will come in under $1000.
This is the camera CNB VCM-24F I would highly recommend (we use these extensively in our restaurants) - a bit more expensive, but worth it for their low-light image quality.
BTW, none of the cameras listed on your fleaBay links could be considered "long reach" - the ones in the first link, for example, list 3.6mm lenses for the indoor cameras, which gives you a reasonably wide view, but not quite enough to completely capture a corner mounting. The outdoor cameras are 6mm lenses, which aren't really wide enough to capture a large area, and not long enough to get very much detail... and none of them are adjustable. The CNB cameras, by contrast, include 2.8-10.5mm varifocal lenses, which let you adjust the area of view anywhere from nearly 90 degrees, to around 30 degrees for those close-up detailed shots.