^^^ At least $500 for every inch of lift
OME is ARB's stuff and you can't go wrong for the price. I had OME on my 2000 Tacoma and it took years of pounding and didn't whimper until i totaled the truck.
Rock Krawler has some pretty cool gear, and now custom shocks. A local dude has their 3.5" setup with all the bells and whistles. Cool thing about them is you can pick their 3.5" short arm, and add-on as you go. It's meant to be done piece-wise or all at once.
I just recently installed a Currie 4". I paid about $3k. But this included a free Currie front trackbar gifted from a close friend, so it's more like $3300. In that price are Fox shocks at $130 each and SYE/Driveshaft combo @$500. I have all the travel i'll ever need along with a 1" body lift. It's a big chunk of change but one that you won't regret. At least not after the first month lol...You could go cheaper trackbars (Metalcloak, JKS or RE) and shave a little off with a good shock sale and SYE and probably come in at $2600-$2700.