how come ESA which is a 750 option costs almost 3 grand to replace????? i don't understand why it only costs 750 to get a bike with ESA but after the shocks go bad it costs damn near 3 grand to replace them. what's the life expectancy of the factory shocks? i put 44,000 miles on my KRS and never had a problem with the shocks....should i expect the same with the ESA???? i'm thinking if i had to spend 3 grand on shocks i'd rather trade the bike in and use the 3 grand as a down payment on something new without ESA.