So I'll recommend LastPass. It meets all of your sharing needs. There is also an enterprise edition with more coworker/employee login sharing features (but I've never tried that out at all).
Security note #1: While this is secure from external snooping the person it is shared with can get the password (even if it is hidden with a little bit of work)). So definitely use a unique password (you should do that all the time but many people don't).
Security note #2: Once shared although you can unshare the password you cannot count on it not being known even if set to hidden (due to #1). So to truely unshare you will have to change login credentials. The enterprise edition intropage seems to imply that it is developed to somehow avoid that but if you read the docs closer it does not actually avoid that at all.
As well it is:
- Cross-platform: (Windows, Mac & Linux) and cross-browser compatible (all 5 common browsers)! Also has an Android and iOS app.
- Very Secure: Lastpass is very secure; of course generally it is only as secure as your master password. However you can enable multi-factor authentication (might need premium I can't remember - since I don't have cell signal usually I haven't bothered to set that up for anything despite the benefits).
- Fairly cheap: Free version available. Premium version is well within your price range - $12/year.
Lastpass is also more than just a password app; you can securely (ie encryptedly) store important documents and notes and credit card/address details as well.