Inflatable Rib Sib Dinghy

Inflatable Rib Dinghy 3.2, Evinrude Outboard.Dinghy, approximately 10 years old, good condition 2 seats with storage bags, oars, inflatable floor, inflatable keel. A couple of punctures both repaired, holds air well. New transom, no leaks.Outboard, Evinrude 7.5hp short shaft, excellent condition for year, starts 1st or 2nd time, ticks over perfectly, revs how it should, pumps water good, nothing needs to be done to this engine, I have looked after it and it has been solid and reliable. Any questions I will be honest.When I last used the dinghy it was air tight, however since advertising it, I can pump it up in the morning and by evening it has lost a small amount of air. I cannot find the leak so I am lowering the price because of this from £650 to £550 offers.