of course the upgrades are expensive.
That's kind of you to say but where are the upgrades?
He lists basic maintenance items, ie; carb work, tires, battery, etc., and some add-ons.
My concern would be the dried out gaskets, seals, corroded electrical components, etc., from sitting for 26 years.
That's what costs time, money, and work!
I once bought an old car with 1,100 original miles. Changed the oil in it and it sprung leaks everywhere. I bought it cheap and sold it cheaper. I've had lots of old mowers, motorcycles, tractors, and other assorted equipment. Under the paint and new parts, it's still an old machine.
Hey! Maybe it's all good. Just sayin'.