I bought the 93 new, so I have had it for 17 years now. It has 169,000 miles on it now. other than general maintence I don't know how much I have spent on it. I think the worst part is that I am on my 4th t-5.
The 86 I have had for about a year now and I have probably put $1,000 into it.
The 88 I have had for about 6 months and I have put nothing into it. I have no time to work on it with the other two.