Just did the cost of this project.
Peltier $18.95
Cooler with Fan $0.00 because i already had one normally about $15
Small plate of alu $3.00 ?
Insulation $1.00
Doing it $nerve wrecking
Time taken 4 hours.
Total $21.95 or $36.95 with fan assy.
When i have my camera open for the article i will replace the alu with copper and see what that does.