Greetings and welcome to the forums!
I would look at what they sell for at LOR's website and never go higher than 70% of that. But at this point, I'd sign up for their newsletter and buy one new for 30% off during the Summer Sale. Actually, no - I see enough people posting problems with Directors here and being an IT Pro I'd spend $100 on a used/rebfurb windows 10 laptop or PC and run my show off of that and buy a $150 G3 controller used or a $239 controller at the Summer Sale (although I like the commercial ones so much I might be done buying residential controllers). I actually used a desktop for 2019 and moved to a $100 Lenovo ThinkPad T40s for 2020 as I was in the yard or garage for half of setup with it testing things.
That's me. If you don't have the ability to bore a hole in the side of your house or garage for the computer wire (they sell mounting boxes at Home Depot for $6) then getting the all-in-one box does make sense. I would still get it from LOR direct since it will be your first and also note you need software and an RS485 adapter. Coming from Mr. Christmas myself (2015-2019) I would suggest you then buy one of the 16 channel starter kits which come with a standard controller+software+RS485 adapter at a discount and also get the all-in-one box as well. That gets you 32 channels to start with which I think is a good place to be in. We went from the 6 with Mr. Christmas to 16 with LOR and thought it was lame so immediately added 16 channels and then 2 weeks later another 16. We bought our sequences last year from LOR so if you're making your own or getting some shared ones your mileage may very. (We went to 128 channels this year, but my wife and I are a little nuts).
By the way, I'm about 45 minutes from you so I will warn you some of the folks here will be bellyaching in the fall about it being so hot to setup - and it will be 40 or 50 for us. The weather is also why I am favoring the metal units - I actually got some water in one of my residentials this year.