Is all the abuse regarding grammar really necessary? The op just wanted a few opinions on whether the add was misleading not whether he failed GCSE English.
When it comes to situations like this, if I have a feeling a might have cocked up and duped, intentionally or otherwise, someone into spending more than the item is worth, then I offer a refund or part refund. If on the other hand you believe what you sold was worth the price they paid you then they should be able to sell it on again if they are really unhappy. Looking at the description, you do state it doesn’t come with a shock so if you can hand on heart say you were not out to deceive then stand your ground.
I sold a road bike I had bought just for one event. I paid 200 for it and sold it for 350, I felt bad to have made a profit on something that imo was not worth 350 but that’s how auctions go. In the end the guy complained that the frame was more marked than he expected, I had tried to show everything in pics but because I felt bad I offered a 50 pound part refund. He was happy, I was more comfortable and all was good with the world, until I got the eBay seller fees that is 🙂