Upgrading shocks inevitably falls into the "race-car" arena, and for race shocks, figure $350-500 apiece. Some are 3x this cost. This holds for cars, motorcycles and competition trucks. I paid over $500 for a single gas-adjustable shock for my motorcycle and was glad they had one in stock! Remember, this is a VERY limited market, the parts are expensive & most are hand-assembled (at $75+ an hour!) In operation, the damping oil is squirted at very high velocities thru carefully sized orifices. The high velocity oil acts like a cutting torch, abrading the damping holes ever larger and bingo-you've got another worn-out shock. Seals also have a tough life, as do the 3/8"-1/2" dia. shock rods, which often bend! Bottom line- if you want to play in this game, you pays the tab....or run less-exotic old-style Konis (as I do!) Pat Mical in Massachusets convert old Konis to coil-over operation, rebuilds & retunes the damping etc- but he ain't cheap either.... Sorry.