In my personal opinion you are unlikely to get the combination of a good camera and 100 feet distance for 100 bucks, and it would be a waste to spend a big percentage of the money on the cabling.
If you have a network I can recommend a very good IP camera that will run 100 feet away with only a network cable (it’s powered over the that cable too) but it’ll cost about $170 and that’s a Panasonic BL-C140.
Hopefully someone else can come up with a tested solution that fits your budget.