Absolutely......I try not to give quotes over the phone, I like to inspect the vehicle & examine what exactly I'm getting myself into if they're over 5 or so years old.
Not much of any corrosion related issues here, But people love to run a leaking vehicle until it becomes untenable OR has dried mud caked level with the frame & expect to be charged "Book Time"??
I'll let that crap fly with a good Lot/Fleet account that spends 20K a year or so....But a random walk/call-in client is not likely to get a pass.