The amount $30/£16 sounds good to me as well. So if there are no objections, we'll just go with that amount, and if we need to tweak things later, we'll do so.
If it's ok with everybody, I'll draw the names tomorrow. I'm entertaining in a few hours (my old work gang is coming around later), so I'm a bit short on time today.
Then after we all have the name of our foodie friends, I would suggest talking personally to your new friend to discuss what items everybody wants. Does that sound ok?
And of course, refer to Mars Bar's fab list of restricted items!