That would make it to powerful so how about when you buy it does nothing to speed productions and you can for instance offer 125k to speed up the production of sap where it produces ever 4 days or so etc
cause otherwise it would be ultra overpowered it could also double quantity of produced items like
wine if you had one keg and you made a offering to double keg production instead of giving you one wine it gave you two. there could be upgrades like
double production (doubles the amount the upgraded thing produces)
sped up productions ( reduces production time for more profit)
quality production ( put a quality star on item produced only applies to kegs and preserves, if you've upgraded once it adds silver star. Etc basically reduces need for casks)
production demand (increases demand for item therefore increasing the sell price of item, upgrade applies to group of items, artisan goods, fish, etc)