Dealer tools

I was wondering what tool do dealers use to program keys, correct odometer etc.. I found info about the Abrites AVDI, but at 800€ do you know what it does? If it is good value? I'd like to program a new style key on my W219, and when I see the prices of new new-style MB keys on ebay and their prices at the dealer, I'd really like to do it myself.
Thanks)
I was wondering what tool do dealers use to program keys, correct odometer etc.. I found info about the Abrites AVDI, but at 800€ do you know what it does? If it is good value? I'd like to program a new style key on my W219, and when I see the prices of new new-style MB keys on ebay and their prices at the dealer, I'd really like to do it myself.
Thanks)





