The cost of these controllers has a large range depending on the length of power cord required, the style of 240V receptacle that you have, the number of elements you require, whether you need an alarm or a rotary timer etc...
Generally speaking the price ranges between $250-$525 dollars.
You can send me an email at
kcenicola@aol.com and I can work you up a design that will meet your needs and give you a fair price. (I don't make a lot of money on these.)
Ken
NHA Supply LLC