Something to keep in mind is the "difference" in prices versus the "total" price of a lift kit. For example, a medium quality lift kit may be priced at $1,500 compared to a top quality lift kit priced at $2,500. The difference is $1,000.
Now, some might say that $1,000 is a huge difference but compare that to ride quality and long-term reliability over the life of the vehicle. How would you like to spend that $1,500 on a medium quality lift kit only to find yourself disappointed in a few years and either having to live with it or spend the $2,500 for the top quality lift kit you could have purchased in the first place.