If you’re looking for certain resources or materials in Stardew Valley, there’s a high likelihood that one of the many in-game vendors will sell at least some of them. One of these vendors is Krobus, who sells various rare items.

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Before you can unlock Krobus’ Shop inside the Sewers, you’re going to have to put in a little bit of effort. The Sewers are locked for a while at the start of the game, and unlocking them requires some effort on your part. 

It’s not just Krobus’ Shop awaiting you in the Sewers, either. If you want to catch all of Stardew Valley’s Legendary Fish, you’ll find one of them down here, too. Plus, if you want to befriend Krobus, you can’t even begin to do so until you’ve unlocked the Sewers. 

How to get the Rusty Key in Stardew Valley

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You’ll first hear about the Sewers and the Rusty Key from Vincent and Jas on or after Spring 11 of year one, if you enter the Cindersap Forest on a Monday, Thursday or Sunday. After that, if you try to enter the Sewers by either of the openings in Cindersap Forest or the main town, you’ll be told that you cannot enter yet. 

To get the Rusty Key, you’ll need to donate 60 items to the Museum. These donations can include artifacts or minerals, but you need to donate 60 unique items. After you’ve reached this number, Gunther will visit you at home and give you the Rusty Key, allowing you access to the sewers.

How to unlock Krobus’ Shop in Stardew Valley

Screenshot by Destructoid

The good news is that once you’ve donated 60 items and got the Rusty Key, you’ll now automatically have access to both Krobus and his shop. You’re now free to win him over with conversation and gifts or otherwise purchase rare items from his shop. 

If you choose to make Krobus your roommate, he will no longer be in residence down in the Sewers. You’ll still be able to access his wares if you go down there, but he will be replaced with a chest which you’ll need to interact with.

Krobus’ Shop has a selection of items that are always available with a rotating stock that changes daily:

Permanent stock

ItemCostAvailabilityVoid Egg5,000 GoldUnlimitedSign of the Vessel350 GoldUnlimitedMonster Fireplace20,000 GoldUnlimitedButterfly Powder20,000 GoldUnlimitedSolar Essence80 Gold10 per dayVoid Essencce100 Gold10 per dayStardrop20,000 GoldNo longer sold after one is purchasedCrystal Floor Recipe500 GoldNo longer sold after one is purchasedWicked Statue Recipe1,000 GoldNo longer sold after one is purchasedWizard Catalogue150,000 GoldNo longer sold after one is purchasedReturn Scepter2,000,000 GoldNo longer sold after one is purchased

Daily rotating stock

DayItemCostAvailabilityMondaySlime10 Gold50 per weekTuesdayOmni Geode300 Gold1 per weekWednesdayFish / Magnet200 Gold5 per weekThursdayMixed Seeds30 Gold10 per weekFridayIridium Sprinkler10,000 Gold1 per weekSaturdayVarious cooked dishes50 – 500 Gold5 per weekSundayBat Wing30 Gold10 per week Post Tag: ConcernedApe Stardew Valley Destructoid is supported by our audience. When you purchase through links on our site, we may earn a small affiliate commission. Learn more about our Affiliate Policy Join The Conversation