I have had the Drybunk on for a few months now and it does a great job.
Had to cut it down an inch to make it fit within the bookshelf (large size Drybunk) and it didn't crack or split. I've been leaving a sponge in it while away and that works out well.
I only needed one for the porthole in the aft berth above my
head while sleeping, the porthole does not leak but it's angled and sometimes
condensation drips on me. I'll admit with a
teak interior it does detract and all but I like not being woken up by a drop in my eye or ear. Might buy another one for the
galley.
I think it was around $35 w/shipping.
Money well spent.