Surly Nate 60tpi tires, very lightly used. $40 for the set.
Waltworks 170mm spacing fatbike frame (details here) with Cane Creek 40 headset, Thomson post, and X9 cranks/28t ring. Roughly a size “large”. $500! Full build kit available if you need parts.
Hope Fatsno 170/135 Stan’s Hugo wheelset. In great shape and excellent for lighter riders/up to 4″ tires. Includes a brand new spare rim as well if you’re worried about damaging one. $350.
Thomson Masterpiece 27.2×330 seatpost in silver. Brand new. $80.
Get all of that stuff for a mere $900!
Also available: 175mm GX gxp fatbike cranks w/32t chainring. $100.