Grow box questions?

Hello everyone,
I am still doing research daily on a hobby grow box plan. There is soo much info (a bit confusing) but alot of it is beginning to make sense. I wanted to know if anyone has used one of these units? I know everyone says build your own etc. but I would feel alot safer with fire hazards etc. to purchase something fairly inexpensive first and then when I get the hanf of everything maybe have the confidence to build my own. http://cgi.ebay.com/Garden-Cabinet-...42225QQcmdZViewItemQQ_trksidZp1742.m153.l1262

and

http://cgi.ebay.com/Garden-Cabinet-...42225QQcmdZViewItemQQ_trksidZp1742.m153.l1262

Thanks for looking and anyones opinion or experience is greatly appreciated.

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