Hate to tell ya, but it is probably as much of a collector's item now as it ever will be.
On the other hand, ya never know...
The PlaySkool / Fisher-Price look and feel of Windows 8 Metro could take over Windows-land, and if it does, I predict that "MS-BOB" will stop being an ancient, weird, abandoned novelty and start being revered as "decades before its time".
And dear Melinda Gates, the chief driving force behind MS-BOB (and oh-by-the-way Bill Gates' girlfriend at the time) will be seen as "prescient" and a true visionary of the user interface of the new millennium's second decade.
Released right as the Internet was beginning to become popular, Bob offered an email client where a user could subscribe to MCI Mail, a dial-up email account. The price was $5.00 per month to send up to 15 emails per month. Each email was limited to 5000 characters, and each additional email after the limit was reached was an additional 45 cents. A toll-free phone number had to be called to set up the account
Oh yes, that was gonna happen. lol.