As often said this is a pilots forum- I am a maintenance guy.
I've owned seven aircraft (from C150 to C402), six boats and four sports cars, the rest of my wages I spent foolishly.
Whilst I have great respect for good maintenance guys, I've learned to be very skeptical of their pre maintenance cost "estimates".
I've also learned that a penny skimped on maintenance will ultimately cost the owner a dollar and there is no such thing as a cheap engine overhaul.
My advice to Deanna41 would be to take a Bex and a long lie down until the madness passes!