Yes, both DebugBear and PageCheck offer a Free Trial.
DebugBear is designed for Large Enterprises, Medium Business and Small Business.
PageCheck is designed for Medium Business and Small Business.
Pricing for DebugBear Starts at $49/Month whereas for PageCheck Starts at $19/Month.
Some top alternatives to DebugBear includes Super Monitoring, PageCheck, Wattspeed, Dotcom Monitor, DevMonitor.io, GTmetrix, Uptrends, SolarWinds Pingdom, PageWatch and Speedrank.
Some top alternatives to PageCheck includes Uptime, Super Monitoring, GTmetrix, Uptrends, 66uptime, WebForce Uptime, Pingt.io, 4Uptime and Performance90.