Hey Karen, just looked into buying
Guess 50-100$ will not cut it.
I'm looking into a used (or manufacturer refurbished) Dji Spark or Mavic.
Both provide reasonable good image quality. The Spark has the advantages of being lighter, smaller and cheaper. Drawback, it only has a 2 way gimble and is much more susceptible to wind
due to its lighter weight and lower topspeed.
Further the gimble gets apparently locked at higher speeds sport mode which you might need when flying on slightly windy occasions.
Shaky fottage might occur than.
The Mavic seems much better but is considerably more expensive.
Maybe somebody has other alternatives. Would be glad to hear from someone using a Spark on a boat