Assuming you are looking to use the Magna-lok rivets in 1/4" the Huck tool is north of $1500 now, buddy bought the Huck AK175A I don't know how well it's going hold up with the Magna-loks. I have a old CP air/hydro puller that would do them but break the jaws after 15-20 rivets when using Magna-loks.
What are you looking to rivet in the trailer?