On Sunday, May 5, 2019 at 10:53:28 AM UTC-6, wrote:
New glider owner - looking to purchase insurance- companies - cost? Value sailplane + trailer = $32,000

Costello usually offers some of the best rates available, especially if you are an SSA member, and you can get an additional reduction for being an AOPA member as well. There are other options out there as well. Don't know much about them though.