What is the ruling of Islamic law regarding disputes over the valuation of shared internet network devices? Should they be valued at their current price minus 25% for usage, or should the member who joined later be reimbursed the same amount he paid upon joining?

If the partners agree to dissolve the partnership, each partner divides a quarter of the equipment. Alternatively, the equipment can be sold and its price divided, or it can be appraised, and the withdrawing member takes his share. We advise paying the full 200 pounds to the withdrawing member, out of a desire to mend relations and because his claim has some basis; he paid the full amount when he joined the company in place of the previous member, without any appraisal of the used equipment.