"Split off from issue20" and reference to msg65 below -- so this is from 2009. :-)

I will close this issue as a duplicate since issue1009 will (among other things) separate costs according to first/all achievers.

This is part of issue987.

Split off from issue20.

Quoting Erez's msg65:

    I had an idea about landmark costs for LAMA - when a landmark has not been
    reached, use the cost of the cheapest first achiever as the cost of the
    landmark. If a landmark is needed again, use the cost of the cheapest
    possible achiever.

I think this should definitely be implemented, and I think it makes sense to
also have it as the default, although whatever is currently used should also be
available.

Question: what does it currently do instead?