We have over 100+ CX600 Polycom Phones which are compatible with Lync and Skype For Business up for grabs. We also have a few CX500s.
They are free, however, you will be required to pay shipping. They will be shipped in sets of 22 and shipping per box will be roughly around $30, but may vary depending upon where they are being shipped to.
If you’re in our area (Anderson, SC), you can pick up as many as you would like!