Quoted from 27dnast:

Those are MSRP prices... you have to call to get a price. I've actively heard (read: recent) other collectors fetching offers between $4700-$4900 shipped to door.
As for mods, they can certainly add some value, but it really depends on what they are. Color DMD is pretty much something that you can ask near full price for (or, alternatively, pull it and keep it for a future game). Other mods, however, are catch as catch can. There are some ACDC mods (for example) that are worth more now than when they were new (they add to the game experience and are no longer available)... the walking dead prison tower is another example. It's tough to find right now and isn't currently being made (Marco just sold its final 3 towers for $50 over the original price). Other mods, like cab lights, etc, are sunken money...the same can almost be said for LED conversion.
Not trying to bust your chops... your game, stock, isn't worth the $4800 or $4900 that a NIB stock game is worth because the NIB games are still available. If those games were no longer available and the market was hot for the title, then, yes, value might be more. So, I think you're starting point might be a tad high. I could be completely wrong on this, but that's what my gut is telling me!

Quoted from flynnibus:

I don't want this to seem like a pile on.. since some people have already responded with some insight on the actual pricing out there. Some simple guidance there is, don't go on advertised prices for NIB games, you actually have to talk to people and get past the 'oh, you are random person who found me on google?' sales response and get the actual 'you are a hobbyist buyer who doesn't pay retail' response
As for used prices... I have personally been involved in 3 MET Pro sales in the last 8 months all in the price range I mentioned right here in NoVA.
Darin sold a significantly mod'd minty HUO MET Pro to a friend for $4500 back in april - https://pinside.com/pinball/forum/topic/whats-fs-in-maryland-right-now-maryland-fs-thread/page/2?tu=bigd1979#post-3071939
I bought a barely played, flawless HUO MET Pro with moderate mods (shaker, art, lightning rails, etc) from houseofpin for $4500 back in December. - https://pinside.com/pinball/forum/topic/whats-fs-in-maryland-right-now-maryland-fs-thread?tq&tu=houseofpin#post-2819919
I know of lightly routed MET Pro LED that sold to another local guy for well under that number as well (I won't quote it as I don't know if the price was public)
When I was shopping, my target price was $4200 for a non-LED MET Pro... I paid more based on the basically NIB game+mods and location.
It's a high volume production game, and its still being made... so you aren't getting price appreciation at this point. It's just about how much value has the game kept, based on condition, location, and then what add-ons are on.
Again, not trying to pile on... just sharing some hands on experience with the game sales of late. Good luck with what you choose with your game.

Quoted from flynnibus:

I have not shopped games in the last few months... but I know at Allentown quoted prices (and this was immediately AFTER the whole stern fixed pricing thing) were $5100 if I recall (cointaker and trent) for GB pro. And since then, I'm sure the games of how to get around that have come around. You'll note I'm not quoting NIB prices.. only stating that the owner is competing with NIB availability.
Popular games sell right away when priced right. If your game doesn't sell in days in this area, you probably have it priced wrong or its a game people aren't really into. People always want to talk about what they THINK games are worth... I cited examples of transactions I was actually *IN*. Proof is in the pudding.
If you don't like my cites... you can try these listings
$4600 for HUO plus expensive mods from
Edit: WTF.. stupid forum software chewed up my URLs to market place ads - I'm not doing it again. Go research the marketplace archive.. you'll see routed games from 4000, clean games from 4300, and heavily mod'd ones available for 4700. All within the last few months

Quoted from bigd1979:

You definitely can get pros still under 5 shipped at mostly any distro on east coast... premiums had a 300 -400 increase to 6700 shipped . Pros use to be 4600-4700 and are now 4900-5 shipped. People need to stop paying the 5500 for a pro or that willbe the new price for everyone which is getting ridiculous . Thats over 1200-1300 from where you use to be able to get a met when it first came out(4200'-4300).