I doubt Sbien is a very popular name. Do you know a lot of people by that name ?
Bien means good or well in French, but you don't own bien. You own sbien.com. Completely different thing.
Domain names with articles are generally not valuable, and there is no scarcity of those. These names were available for a reason.
Millions of garbage domains are registered and put up for sale. They will never sell. People can ask absurd amounts for crap domains, that doesn't mean they are priced right. Instead, you should look at reported sales and see for yourself what kinds of domains are in demand.
You can't use the bad registrations of others as a meaningful baseline.
You are not getting it. Now is the time to learn and quick. Cut losses now, and focus on acquiring quality domains.
I agree with the others, you should definitely ditch these domains. Hanging on to bad domains will do no good, you will just throw away more money on renewals and make your registrar happy.
This is the cold truth.