The photo you commented on was my truck at slightly over stock height. the real question is how high do you want to go? For an 03 edge, there are several options... Body lifts, Suspension lifts, Double Lifts, or Solid Axle Swaps. A cheap option to get you started is what is know as a torsion twist (i had a slight torsion twist (.5") in the photo) you can go up to about 1.5" in the front before you run into problems Price: $60 for drop shackle + whatever the cost of a front end alignment.
As far as lift options (not including tires or installation) if they are asking that high (in US Dollars) for anything under 5" of lift (not installed and not including tires) i would say they are way out of line.
you can get a superlift for $1600 or cheaper, and Solid Axle Swap (SAS) your truck for under $2000