Its all about price of admission and the venue you want to attend. Anyone restore a vintage wooden boat lately?
Bargain or no bargain? It all depends on what you think a bargain is and what your expectations are; of the car and yourself. My car is really nothing other than a "stress reliever" where I can leave the stresses of my job hanging with my suit in the closet. As soon as I put on my "grubbies" my focus shifts to the endless possibilities my car offers.
If you want to purchase a Pagoda to restore and then try to sell it at Bonhams - absolutely don't start with a rusty car - you will be underwater before you finish peeling off the undercoating. If you want to play with the beautiful mechanicals, learn to weld, participate in car rallys, meet with like minded car enthusiasts and experience the overall experience that the Pagodas offer, then starting with a rusty car may not be all that bad.
Yes I agree starting a restoration with a rusty car will probably see you throwing thousand dollar bills at your body man in reckless abandon. And don't expect it to stop at $20,000 anytime soon. But who says a car has to be restored - how about resurected or resessitated. Spending $35,000 on a $15,000 car to bring the value up to $40,000 after two years of driving doesn't seem reasonable so why bother.
I find that the most enyoyable part of my experience is wrenching, driving, and meeting enthusiasts (in that order). If I started putting my money away and when it totalled $40,000 and only then went out and bought a car I would miss out on all the years of fun inbetween. I got into the game on the cheap and think the smiles per mile ratio has been farly good so far.
Now that the interior is back together, the running gear is alive and the floor panels, wheel wells etc. have had the rust cut out and welded up, sealed and made to look pretty I don't even think about resale values. Why would I, I'm not selling this car. After all I got it for a bargain.