Details: Well you implicitly chose one of them; the increase bulk is a one-time purchase at a moderate price.
Other possibilities:
Make the extra bulk cost MORE than the original purchase. I.e. 1000 extra for 1M rather than 250K.
Make the extra bulk a rental rather than a purchase. I.e. it is an expense every (Atys month, Atys Cycle, Jena Year, IRL quarter). Pricing details then get even more sensitive.
Other details:
Should it belated to civilization fame at the location of the apartment? I.e. you can't buy extra space until your fame is <value> or space is cheaper if your fame exceeds <value>. Details of the <value>s in question would be important.
Just a few of many possibilities depending on whether or not the devs want to link the extra space to other behaviour modification actions.
Other possibilities:
Make the extra bulk cost MORE than the original purchase. I.e. 1000 extra for 1M rather than 250K.
Make the extra bulk a rental rather than a purchase. I.e. it is an expense every (Atys month, Atys Cycle, Jena Year, IRL quarter). Pricing details then get even more sensitive.
Other details:
Should it belated to civilization fame at the location of the apartment? I.e. you can't buy extra space until your fame is <value> or space is cheaper if your fame exceeds <value>. Details of the <value>s in question would be important.
Just a few of many possibilities depending on whether or not the devs want to link the extra space to other behaviour modification actions.
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Remembering Tyneetryk
Phaedreas Tears - 15 years old and first(*) of true neutral guilds in Atys.
(*) This statement is contested, but we are certainly the longest lasting.
<clowns | me & you | jokers>