sentiment, in short, have (or with) one's fingers (or hand) in the till, 'Sums don't add up'

In short, Google's approach to cloud computing is revolutionary, while Microsoft's is evolutionary. Live Mesh appeals to the status quo, which should make it the easier sell. And yet Google's momentum is undeniable.
For now, customers are free to decide which model better suits their individual workflows and requirements. Independent developers, on the other hand, face a more difficult choice. Do they follow Google's lead down the road of "pure" cloud computing, where both documents and applications exist solely in the cloud? Or do they take a cue from Microsoft and push data into the cloud, while still relying on traditional desktop applications to create and manage the data?

Henry Ruddock, the owner, said: "Costs are going up and business declining".
Jules Jackson, a shop assistant working at the store, said she was "gutted" at the closure and working there felt "like a family".
Mr Ruddock said it was "immensely sad" that the shop was closing but he could not "put sentiment in the till".

'Sums don't add up'
He blamed the rise of internet shopping and changing consumer habits for the shop's closure.
"The sums just don't add up, in one way it's really quite simple", said Mr Ruddock.
The shop closed its doors at the end of Saturday's trading.

doesn't add up meaning

1. Amount to an expected or correct total, as in These figures don't add up,meaning they are not correct. [ Mid-1800s] 2. Be consistent, make sense, as in I'm not sure that all this testimony will add up. [

sentiment

ˈsɛntɪm(ə)nt/

noun

1. 1.

   a view or opinion that is held or expressed.

   "I agree with your sentiments regarding the road bridge"
2. 2.

   exaggerated and self-indulgent feelings of tenderness, sadness, or nostalgia.

   "many of the appeals rely on treacly sentiment"

Phrases

• have (or with) one's fingers (or hand) in the till
• Used in reference to theft from one's place of work.
  ‘he was caught with his hand in the till and sacked’

Origin

Late Middle English (in the general sense ‘drawer or compartment for valuables’): of unknown origin.

till2

NOUN

• A cash register or drawer for money in a shop, bank, or restaurant.

  ‘there were queues at the till’

  ‘checkout tills’

in short
used before describing something or someone in as few words and as directly as possible:
He's disorganized, inefficient, never there when you want him - in short, the man's hopeless.