$450 seems downright cheap. $1000 dollars seems quite fair. When my wife and I did this, (we also had an AB trust done) we paid $1400. Other attorney’s quoted us more.
One suggestion. When naming your trust, pick something something short and sweet, that will work for you in the future. The “Reginald Henry Snodgrass and Catherine Mary Wimpleton 2011 revocable trust” is the kind of name your attorney will default to. Instead use something simple like “Bonzos Trust”, or anything, bu simple short and something that does not include your name is helpful from my experience.
Oh yeah, Be sure there are specific simple instructions for amending the trust.