Price has a lot to do with condition along with things such as: does it come with box and paper work, GF ladder bracelet, has it been recently serviced etc..
For what it's worth here is my opinion, assuming that the watch is in great condition, recently serviced and comes with GF ladder bracelet.
A3817 and A3818 are going to be in the range of $13-$15k. Mathew Bain recently sold 2 really nice A3817 examples and their list price was in this range.
A386 as far as I'm aware are going for $15-$18k
A384 and A385 are some place around $6k
Again this is just my opinion based on what I've seen lately. Others may want to weigh in.
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