The “er” ending limits use of the domain.
NameBio lists 54 sales of *helper.com domains and 317 sales of *help.com . I checked some of the *help.com, and most aren’t being used. familyhelper(.)com is being used, and it was sold for $299.
jethelp(.)com is for sale at $7,600, and you definitely need to go lower.
Probably $3,000