Not really antiques, but definitely collectible, would best describe Longaberger baskets. They used to be great sellers, currently however they mostly collect dust. These baskets belong to a long list of things that used to sale for good prices and are now just a shadow of their prior selves.
A typical basket like this will sell for $10-15 each. As recently as two years ago you could get $50 for this same basket. There are, as always, higher prices for the more unusual examples of Longabergers. The higher priced baskets are low compared to where they were in the recent past.
My recommendation; stick to buying them at garage sales for $2-5 each and sell them for under $10. Getting competitive on things like this based on their past history could be detrimental to your financial health.