The shittiest aspect of Office is the price.
How does it compare with the cost of, say, one Starbucks a day?
If you employ somebody on that salary for 6 years (so add extra employment costs including taxes, insurance, office space and perks), what percentage do you save by not paying Office's shitty price?
The real question is, if vim cost $100, would you pay or would you use a product you didn't like as much, that wasn't as efficient, or as productive? How much would you pay for a Supervim that earned you an extra $5k/yr?