It's great to have good Ebay experiences. All of mine have been, actually.
What's your FD? I sheared off my FD anchor bolt, and I took the derailleur off intending to take out the broken stub. I never got around to it, and I rode it around with no FD for close to 20 years. I shifted the front with my hand. I only shifted down to the small chainring for hills, anyway. I had better knees then. Ummmm or maybe my knees suck now because of that. I dunno.
I eventually got a new FD--a NOS Suntour, similar to the original. it only cost me $10 (on Ebay).
Anyway...