Welcome to KZr, John.
I didn't get a chance to see the bike in the ebay auction. But assuming it's complete, in running condition and in need of no
major repairs, then I'd say you got a fair deal.
Most folks say $1 per CC is about the going rate for a complete running bike.
Like was stated, the MSF course is probably about the best thing going not only for new riders, but also for riders returning to the fun after a few years hiatus.
My wife took the MSF course in June of last year.
And although the only bike she had ridden prior to then was a 250(?) enduro about 20 years ago, she passed with flying colors!
She already had a bike sitting in the garage awaiting her that we had gotten from a co-worker of hers: a '96 VN750 Vulcan.
Granted, it's just a tad
bigger than the Suzuki 250 the MSF course provided.
My recommendation would be like was suggested after you've completed the course, find a paved area without traffic (parking lot at a local school for instance), and with another experienced rider along for instruction and encouragement, practice on your "new" bike there.
That's what I did with my wife on her Vulcan, and after 2 days each weekend for 3 weeks straight, she was not only comfortable with HER bike, but also felt confident enough to venture out into traffic.
Now I can't keep her away from her danged bike!
Whatever route you take, I wish you the best of luck and an enjoyable time!
I almost forgot!
Like Mark said, we've all been where you're at right now. So don't be afraid to ask questions, we're all here to help.