comparison of two cold smoke generators

[woodpelletsmoker]

Cold smoker, link is http://cgi.ebay.com/ws/eBayISAPI.dll...#ht_4271wt_797


I realize that it is hard to compare with other brand. So I make this comparison.
If any information is wrong, please point out

Design I-1A, Outer Cylinder size D2.5"x12",fuel capacity 0.40 liter, Price US$50, Sea and Land mail cost US$30
Design I-1B,Outer Cylinder size D2.5"x12", fuel capacity 0.58 liter, Price US$60, Sea and land mail cost US$35
Competitor I, 2.5"x8", fuel capacity 1.5 cups or 0.375 liter, Price US$110

Design I-2A, Outer Cylinder size D3.5"x16", fuel capacity 0.78 liter, price US$80, Sea and land mail cost US$40
Competitor II, 3.5"x8", fuel capacity 3 cups or 0.75 litre, Price US$135

Design I-2B, Outer Cylinder size D3.5"x16", fuel capacity 1.25 litres, Price US$90, Sea and land mail cost US$45
Competitor III, 4.5"x11", fuel capacity 6 cups or 1.5 litres, Price US$225


Or you can compare:
Design I-2B, Outer Cylinder size D3.5"x16", fuel capacity 1.25 litres, Price US$90, Sea and land mail cost US$45
With:
Competitor II, 3.5"x8", fuel capacity 3 cups or 0.75 litre, Price US$135
For same price, you will get a 67% BIGGER smoker or 67% LONGER smoking time

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Pump Comparison: 12 VDC vs 110VAC