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Rather interesting idea you got going there. I honestly don't see the point in trying to create such a dream. You can always get a smaller and much cheaper cooler. I've been looking into the market and quite a lot of coolers are 300 dollars and above. I guess me and my igloo polar cooler are...
I have the same dilemma. I'm thinking about this for a few months, I ready to buy it now, but my wisdom says me wait for a little. I think it is reasonable to wait for the price will come down.