Staircases are usually hard to make I find at this scale or costly so I made these, a fair priced and good looking cut to size staircase (pack of four)
Kato KATO Soundbox HO Scale, N Gauge, OO Scale
DCC Concepts - LB-2BB - 200g Brown Blend Ballast Tub n Gauge = 2mm Scale T48Post
DCC Concepts - LB-2LG -200g Light Grey Blend Ballast Tub N Gauge 2mm Scale +POST
DCC Concepts - LB-2LG - 200g Light Grey Blend Ballast Tub N Gauge 2mm Scale T48p
DCC Concepts LB-2LG - 200g Light Grey Blend Ballast Tub N Gauge 2mm Scale +Post
DCC Concepts - LB-2BB - 200g Brown Blend Ballast Tub n Gauge = 2mm Scale +Post