Still, nothing is a bigger killer than not being able to ride because components are worn out.

I don't ebay at all and there are very few 144 BCD options available out there. Because there may be none next time I need them, I was thinking of buying a spare set to have on hand.

Even with that shipping the price isn't too bad given that Regina chains are selling for $150 and Campagnolo chainrings are over $100 each, if you can find them.