If you keep asking for no offers below an amount and then dropping the price you might find less interest.
Why not relist, lots of good pics using imgbb website (use the BBcode full link options, cut and paste into your post and it’ll work great. Easy). Just deal with the offers on the direct messages. If you want to sell..! You can always reply ‘no thanks I need £xxxx’
Looks a fantastic set and I’d love a Stax setup (on day!)
best of luck!