There's a difference between "Will you sell?" and "Will you buy?"
There's a dub at every door, and before some doors there's twa.
A "dub" is a pool or puddle of water. Proverbially, there is a skeleton in every house.
There's ae day o' reckoning and anither day o' payment.
There's a flee in my hose.
"That is, I have some trouble of mind or body about me that takes up my thought."—Kelly.
There's a gude and a bad side to everything; a' the airt is to find it out.
There's a gude shape in the shears' mouth.
But it requires talent and skill to bring it forth.
There's a het hurry when there's a hen to roast.