I have a 1997 LX450 that I have been driving for a year. It is super reliable. But like all cars they do require maintenance and i would put the Lx450 maintenance on the expensive side when compared to other Suvs.
Its also a good idea to learn some good mechanic skills if you are looking to to buy an 80 in order to save you $$$.
$208/month over the course of 24 years to own my 1992.
80s seem expensive to maintain because most people are buying ones that haven't been maintained in years. So they are stuck doing the past 5-6 years of maintenance. That is the reason a lot of people are selling their 80 in the first place. They took it to the dealer and found out there is $4-5k in maintenance/repairs needed. So they sell it. The demand is high enough for these rigs that people don't use (or can't use) the needed repairs/maintenance to their advantage when negotiating. In reality that $4-5k is only $1000-1500 in parts.
So, pay to play to be patient and hope the "right" deal comes along.