One is vanilla, the other is a pulsar. No structures in either. 1 bill or best offer for entrance.
Update. Vanilla is sold. Pulsar is still available.
Update. Both sales are completed, Pulsar is sold.
As an old seller myself, 1B for an entrance only for a C4 is quite expensive. Usually, it would be around 700 to 800m.
In my opinion, the static set is desirable and the number of unoccupied systems with the set is low. Depending on activity, it could be months before such a system appeared in chain by chance, or days of rage rolling by a dedicated individual. Given that I think my price was well justified.