I think if you are selling on Ebay and want a good price you need to write a 'story'
@Bill . I see a lot for sale where just a blunt description which doesn't entice. When people buy a sewing machine second hand they need to see comforting words. Immaculate as new condition, only 6 months old, full set of tools and feet, etc., selling because upgrading and the reason why. Get some really good pictures done and in a good light. I saw one advertised with all the pictures of the back of the machine.
In my opinion Ebay just want their commission quick. The one I sold they told me the average price and I put down what I wanted, despite many messages about recommending reducing the price. If you know it's value just hang on. I actually sold mine very quickly.
What you have to remember is once it's gone you are not offering a guarantee so that knocks a £100 off it. If the machine was virtually new and I really wanted that machine., I'd buy.
For preference I like Preloved, and if you go for full registration, a fiver, you can have many pictures.
Also offer a courier, especially if you have the machine's original packing. Make sure it's fully insured, an extra cost that people accept. Using PayPal for receipt of the money there are charges because you can't use friends and family as people want to feel their money is safe.
If someone wants to collect, expect them to want a demo.
Very often the way you advertise a machine can give it that extra edge on a blunt description.
Maybe someone in your circle of friends would be interested.