A cemetery company or association may adopt rules for disposing of and conveying burial lots; but any person not already the owner of a lot in the cemetery may purchase any unsold lot in it, and have such lot conveyed to him by the company or association upon tender of the usual price asked by it for such lots.
Burial lots sold by a cemetery company or association shall be used for the sole purpose of interments, shall be subject to the rules prescribed by the company or association, and shall be exempt from taxation, execution, attachment, or any other claim, lien, or process if used exclusively for burial purposes and with no view to profit.