I'm doing some similar research on a much older Bernina, a 117K.
You want to look at COMPLETED auctions, not active listings. I found two completed eBay auctions for the 1010. One was just serviced and sold for about $600 and the other sold for $450. So, if you plan to sell it on eBay with similar quanity/quality of photos, etc... that is what you can expect to get for it.