Similar canoes here from Sevylor around about £200 if you scroll down abit:
In the past I have dropped passengers ashore and then anchored and paddled in using the donut, crude, but no room for a tender on a small rib.
If it was me I would just buy one of those cheapo beach rubber dinghys, can buy a new one every year there only about £20. Looks crap but im sure a piece of board to form a more rigid floor or some slats could be engineered into into it. I had a Bombard AX2 and one of those compass ones, and they were just as wet as a rubber dinghy, and at least 10 times the price. Got an Avon R2.85 air deck now, very dry and a quality boat, but they are over a grand new. One word of advise, don't get one of those round tail ones with a bracket if you plan to stick an outboard on it, useless in my experience, the outboard just goes lower and lower on the back as you open it up.