The tabs aren't really made of much. If they tried charging 4 times you could easily go out and fabricate a set for about the same as what we pay. Pretty much four brackets, bunch of self tappers, SS hinge bits, SS plates, and two gas struts. But of course buying all the bits pre fabbed is worth paying a few extra $$.
I hear ya on the gas prices. Its all relative I guess. I'm stilly trying to pinch every ounce of gas economy I can get. You can blame it on the optimizing engineer in me.
BTW I don't know if Iboats ships to the UK or what duties might be but I purchased my SS prop for $100 from them. If you could purchase one from the website you'd probably still make out like a bandit even with the shipping charges. Or just look on Ebay I guess. Alls I can say is for me the SS prop is the 2nd best improvement on my boat thus far.
I'm off to late lunch. Have a great evening.