Where are you located ? and what size tires are you looking for ?I wish I could find them that cheap and I would have already hit Purchase!! Haha
I have gotten 3 quotes from shops around me including discount tire and they are all between 1500 and 1600 for 4 tires mounted, balanced, and installed.
It's crazy I know which I why I am still riding my stock wheels today I just can't pull the trigger on that much money.
However the Mastercrafts that were recommended to me I have read really good reviews on as well as used the Cooper At3 which is the same thing and it did really good and is significantly cheaper which I why I am considering it.
Have you searched online for the size tire your looking for, I've found G2's for about $250 ea, the Ridge Grapplers 295/55R20 tires that I have now $321 ea, without my Discount tire family discount.
If the tire shops are screwing you on pricing you can find online I wouldn't buy from these shops.
Discount Tire should mount them and balance buying 4 tires, sometimes you have to twist their arm a little.
The Vision rims/wheels I have my G2's mounted on average cost is $110 each X 4 = $440 rims alone.
Search and price here https://www.discounttiredirect.com/tires/brands
Buy what you feel comfortable with, there's lots of good brand tires out in the market place that people like.