If I had done it myself, I have no idea what materials would cost. But for the shop to do the cutting of the metal in the storage bin, take the fiberglass mold using 3 layers of fiberglass matting, and to build the box, it's costing $200. I bought my own Pioneer TS-SW1041 10" sub on
ebay for $77, and I bought my own bag of poly fill on parts express if needed for $9.95 I think it was.
They had trimmed the mold when I called this morning are will next be mating it to a MDF top board. The top will be covered in that thin grey felt type carpet. I probably won't check on it again till after Memorial day.
I got the idea from here:
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