For folks to give you a "good" answer, there are a lot of variables that would be useful to know (and please don't be offended, ANY insurance carrier will want answers to all of them).
They include:
Where the vehicle is "garaged" (for most folks, that's at home, but it may be a storage yard in some cases).
Your daily commute miles - one way.
Your driving record.
Your accident record.
Your credit history.
Year and model of your unit (and, yes, some carriers will insure it as an RV, others as a van. If the former, you usually can agree a "stated" value in the policy, if you ask).
Named drivers (only you; you and one other "related" adult; or might it include a teenage child, for instance)
The policy limits you specify - liability and property limits are different numbers.
And more, depending on the carrier.
And, one man's "ridiculous" is another man's "what a great deal".
Cheers.