Is that a decimal point? Sounds like a bug. Could you upload your savefile so that we can take a look at it?
Wow! You even reached the inventory limit. Could you upload your savefile too? It’ll be super useful for debugging. Instructions:
Find the save folder for the saves you wish to upload. By default, they are located in C:\Program Files (x86)\Steam\steamapps\common\Stonehearth\saved_games (assuming a default Steam install).
Zip the folder.
Right click the folder (should be a long set of numbers).
Left click on Send to in the menu that appears.
Left click on `Compressed (Zipped) folder).
(Optional) Rename the folder to something different than the default set of numbers.
Upload the save.
If the zip is less than 10 MB, you can upload it directly. Either use the upload button or drag and drop it into the compose window,
If larger than 10 MB, upload it to a cloud storage site like Dropbox, Google Drive, File Dropper, etc. and post the sharing link here.
the decimal is viewable when doing shopping. if i remember correctly, it happens after finishing the economy quest and getting the 15% tax or whatever.