"For sale on ebay" means ASKING, not selling. Never use asking prices for valuations. Use sold prices. Sold prices have been between $250 and $400.

Restoring your bike to SELL is a non-starter, you will never get your money out it. Restoring to RIDE can be a great idea, if it fits you well. Generally, supplies can be bought most cheaply on ebay, and then Amazon. Or get used parts from a co-op (typically the cheapest option).

I have had a few oddball items to sell on ebay. One was a McDonald's restaurant plaque. Someone was asking $4,000 for an identical plaque. I sold mine for $325. The one at $4,000 never sold. But it did make mine look like a BARGAIN, so I thank that seller! Sales history showed $250 to $350 max.

I sold my old college bike, had been moving it around coast to coast for 40 yers. But in the end, it didn't fit and I had much better bikes that did fit.