We have purchased these over the years and downloaded them to our computer. However, as licensing deal change, we sometimes lose access to our videos. It is a hassle but in the end, Amazon will give a partial reimbursement. It did save us money in the long run, though, because our DVDs tend to get ruined pretty regularly and of course there is no reimbursement when we lose those.
We have enjoyed the Prime Membership this year (lots of good educational stuff) but after a year we have pretty well exhausted their content of interest to our family and won’t be renewing.