Even vinegar is sweet when for freebie.
More Russian Proverbs:
The scythe ran into a stone.Russian
A guest has not to thank the host, but the host the guest.
Russian
Haste is good only for catching flies.
Russian
How is prompted, it will bounce back.
Russian
One cannot make a fur coat from a "Thank you."
Russian
A priest's beard is always soaked in butter.
Russian