We are living in a crazy world for sure. Asking 50s prices for a late 60s Gibson is nuts too. Like the market for 70s Strats, things just don't make sense. A three bolt 70s strat with five times too much paint and icepick pickups is no deal at any price. My dream guitar is a mid 60s D 18. Poor sounding examples are going for $6k. I have only played two or three I'd pay that for, which is why I just bought my Santa Cruz D P/W. So much better than an average D 18. It was hard to give up the dream......for about ten minutes. When I bought my Texan ten years ago now, the poor sounding 60s J 45s were $2800. I paid $3400 for my Texan. The store knew how much better it was.
It wasn't that long ago you could buy a 75 D 25 for $500-600, spend $800 on it and only be $400 underwater on it. A perfectly reasonable thing to do IMHO. But having over $2K in one? I don't know. The last D 35 I saw, it was a 70, was $1600 all fixed up and ready to go. Ten years ago, the shop would not have bothered with it. Right now a 70s Martin post neck reset is going for about the same as a new one. That is a worthy decision, because patina and old wood do tick my boxes. But I made my bed with the Santa Cruz.