To everyone looking to shave a few bucks off a purchase, capital acquisition costs are only a small part of the total cost picture, or total cost of operation (TCO).
Operating a piece of equipment can cost more than buying it.
If one piece of equipment is less energy efficient than another, then it may make more sense to buy the more expensive piece of equipment as it will be cheaper in the long run
Ben - the unit you're looking at is a food warmer. It wants to hold food above 150F. That's real high for chocolate. I'd contact the company (or the web site) and ask them what the bottom end of the range on the thermostat is. Even is 150F is okay, you'll pay more to keep it at that temp than at 120F - and it will cost more in the long run, even if you saved a few bucks up front.
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clay - http://www.thechocolatelife.com/clay/