I have had the Auburn Pro for at least the past 4 years,maybe even been 5 now? with no problems.
The only problems i' have had are my C-clip eliminators leaking,but then again there are some on the market now that dont leak so do your research before you buy
anyways I wouldn't buy this used auburn,you have no idea what kinda abuse it might have had.you'd be better off saving your money and buying new.