Here is a link to a small ice maker that I found on google.
http://www.compactappliance.com/IP210TI-Compact-Edgestar-Portable-Ice-Maker/IP210TI.htmlSome are even less than your target $225 list price. I think it is the kind that I saw at a campout, where the owner put in a quart of water, then a small pump in the bottom of the machine pumps this into the ice mold, it makes ice into a strainer type basket (think silverware tray in your dishwasher) and then any melting refills the water reservoir, so it will make it back into ice.
They list several models, from 20 - 30 pounds capacity with many reviews to read on each one.
Yes they look like they would work, however with just a 2.5 pound capacity, they can only hold a small amount of ice, and you would need to stop by at lunch time, dinner time, and a hour later to "Harvest" the ice into another freezer in order to get anywhere near 25 pounds a day. That is 10 times harvesting 2.5 pounds out of the ice maker and adding 1-1/2 quarts of water each time.
You will also need to dispose of the used water every once in a while. Water had minerals in it, and these typically are not frozen to the ice mold, so the minerals collect at the bottom of the tank.
Fred.
Money can't buy happiness but somehow it's more comfortable to cry in a
Porsche or Country Coach!
If there's a WILL, I want to be in it!
I havn't been everywhere, but it's on my list.
Kangen.com Alkaline waterEscapees.com