You can try Sellermania for free for 15 days.
Then you can choose between a 12 months or a 3 months subscription.

  Commissions on items sold
 Item price 12 months subscription 3 months subscription
£0.01 to £8 £0.12 £0.17
£8.01 to £20 £0.20 £0.28
£20.01 to £40 £0.40 £0.56
£40.01 to £75 £0.80 £1.12
£75.01 to £150 £1.20 £1.68
£150.01 to £300 £2.10 £2.94
£300.01 or more and multiples of £300 £3.40 £4.76
Initial setup fee: £49 paid once when opening the account

The commission applies to the previous month’s items sold under the seller’s username and is payable every month by credit card.

Sign up

Sellermania Analytics (optional): £29 per month
Pricing scheduler (optional): £14.95 per month

The minimum contractual monthly commission is £29

All fees mentioned are excluding tax.