Hmm, so so. The main value is that engine. However the hull is a medium V hull which was okay in its day the 1980s but has now been superceeded. Be aware the date that rib was manufactured, those could be really old tubes. Made quite a useful dive boat as they tended to be quite steady at rest.
There is also an Avon 5.4m in the same price bracket and also this:
But why someone should put 130 hp on the back of a 535 Ribtec is beyond me and way OTT, but would love to have a drive for half an hour