Probably the most popular kit is the ReadyLift 2.0, which comes with a pair of top hat spacers (not preload spring spacers) and revised Upper Control Arms. Overall strong reviews and seems to maintain ride quality over stock.
That kit is about $530 with free shipping, the shop you are having it installed with will probably charge you the same plus tax.
Then you have the installation, which can vary greatly depending on the shop, but a reputable shop will likely charge you $400 - $500 or so. Then there is an alignment, add on another $50 or so.
That should put you in at around $1000 - $1,100 range with tax. You can put the remaining $300 - $400 towards a set of wheel spacers if you want to keep the stock wheels/tires or a towards a towards an aftermarket set.
2019-2021 Ram 1500 (including Rebel) 2WD/4WD 2 inch Leveling Kit w/ new Tubular Upper Control ArmsFor use on New body style Ram 1500 4WD. Not for use on classic body style Ram 1500. Also fits Rebel Edition Front strut extension leveling kit Not for use on air-suspension equipped trucks CNC...
www.readylift.com