From eBay you can order microswitches:
"11PCS 1NO 1NC SPDT Momentary Long Hinge Lever Micro Switches AC 125V 1A CP Black"
11 for $0.79 with free shipping. ($0.072 each)
"20Pcs Micro Roller Lever Arm Open Close Limit Switch KW12-3 PCB Microswitch EUSS"
20 for $2.52 + $0.10 shipping ($0.131 each)
Lots of other choices in those approximate price ranges, but most are from the Far East so shipping time might be a problem.