Sales is probably the longest running remote working occupation in the world, so yes, it works. I know a number of people in sales that are remote almost all of the time.
Sales is much easier than tech/web development to do remotely because you can use commission and/or sales targets to quantify how well the remote salespeople are doing. Don't use a single salesperson as a "test" though; abilities vary so much, you'd have to have a larger sample to determines how well remote will work for your company specifically. Also, internet connections can go down at home, so if you have limited sales staff and depend on them to be selling everyday constantly, you might invest in a secondary method to connect to the internet or make sure they have a backup plan like working from a cafe.
Sales is much easier than tech/web development to do remotely because you can use commission and/or sales targets to quantify how well the remote salespeople are doing. Don't use a single salesperson as a "test" though; abilities vary so much, you'd have to have a larger sample to determines how well remote will work for your company specifically. Also, internet connections can go down at home, so if you have limited sales staff and depend on them to be selling everyday constantly, you might invest in a secondary method to connect to the internet or make sure they have a backup plan like working from a cafe.