https://backpack.tf/classifieds?item=Robo-Sandvich&quality=1&tradable=1&craftable=1&australium=-1&killstreak_tier=0

Buy orders start primarily at 62.12, ~62 keys. Excluding buy order for 70 keys due to being an outlier listing compared to the vast majority of 62.12, ~62 key buy order listings.

Sell orders start at 78 keys.

Bot.tf Sales:

https://ibb.co/bzgjBkC

1 Sold for ~68 keys.

2 Sold for ~58 keys.

Marketplace.tf Sales:

https://marketplace.tf/items/tf2/863;1

https://ibb.co/wpbGY4M

2 Sold for $120.00/ 1.84 = 65.21, ~65 keys.

1 Sold for $139.99/ 1.85 = 75.67, ~76 keys.

1 Sold for $115.00/ 1.83 = 62.84, ~63 keys.

1 Sold for $134.99/ 1.82 = 74.17, ~74 keys.

1 Sold for $158.40/ 1.78 = 88.98, ~89 keys.

1 Sold for $130.00/ 1.79 = 72.62, ~73 keys.

SCM Sales:

https://steamcommunity.com/market/listings/440/Genuine%20Robo-Sandvich

https://ibb.co/HPsWgz4

1 Sold for $190.52/ 2.33 = 81.76, ~82 keys.

1 Sold for $189.90/ 2.27 = 83.65, ~84 keys.

1 Sold for $175.96/ 2.32 = 75.84, ~76 keys.

1 Sold for $139.20/ 2.36 = 55.16, ~55 keys.

1 Sold for $159.00/ 2.33 = 68.24, ~68 keys.

Excluding all other sales due to them being either too low for current buy orders or too high for current sell orders. Going with 63 - 76 keys.