Twilight I think that cost sounds like a lot for a first visit.
We met three when planning an internal refurb (we've got the top two floors of a house so no option on extending.
All three came around and knocked ideas around with us for free. No drawings though, which you would expect to pay for. But I would expect them to be willing to come over, meet you, talk through their credentials (eg have they done other similar projects? Can you see pictures. / visit them?) listen to what you want to do, and throw out some ideas for free.
Then if you go ahead you move to drawings,a greeting how involved they'll be (drawing only / handling planning applications if you need it / project management and running the build).
On this basis, we ditched two
- one was suggesting a floating staircase in a Victorian town house! He was v cool and clearly in his 'floating staircase' phase which was wrong for us and our house
- one was pushing us to have our dining table in the living room, when we were closer we wanted to fit it I the kitchen
We went for the final one, drawings only, and even the we ignored her advice (to put an island in the kitchen) an interior designer also advised us to put an island in the kitchen (we paid her for some other stuff but ditched her at a half way point).
In theory, Architects should be able to 'see' the space better than you can, and make it work well in a way you'd not imagined. The really good ones do that. But lots of them just try to sell you what they're into / what they've done recently / what fashionable whether or not it is right for your house. The advice on the island was like that: they are v fashionable at the moment, but our room was just not big enough for it and it would have been at the expense of something we knew we wanted (to fit a proper table to eat at in the kitchen).
We had other stuff to decide: whether to keep or remove a door. Again we got no good advice on that either. Rather we spent AGES discussing it ourselves. We spent many weekends with the top of our kitchen table laid out on the floor, figuring out to the last millimetre what could go where.
And we did something none of the three Architect's suggested (or supported when we floated it) and it's brilliant.
No island, kept the door, and now when everything is open (we knocked through to the living room) the Space feels massive, as the open doors make the bit in the middle seem to disappear.
The bottom line is none cares about your home as much as you do.
To summarise: don't pay and architect for a first visit. Do a tonne of research yourselves. Online, visit other houses (snoop estate agents etc), grill friends with similar spaces.