Was checking my mail and read the Opale Paramodels newsletter: it was introducing then brand new parachute kit for DJI Inspire 1 that I found interesting. Its price seems correct (199€) compared to there systems for the same brands that are a lot more expensive! Then it seems easy to mount and use: the parachute is triggered by a servomotor connected to a receiver or PPM autonomous module. Seems to be a product that worth a look for Inspire owners.
Here's the video attached: