300 ft or a bit more. Budget? not top of the line. We have some very bad neighbors and need to see what they’re up to.
https://www.atncorp.com/nightvision#:~:text=Night%20Vision%20Devices%201%20NVM14%20NIGHT%20VISION%20MONOCULARS,...%207%20PS15%20NIGHT%20VISION%20GOGGLES%20SERIES.%20
ATNCorp, has thermal devices as well.