I saw this tonight.

This stove is for sale.  Make offer.  #1 what’s a fair offer?
#2 could I modify this to make a rocket stove?  Alternatively, a batch boxstove? If so, what approach would I use?  Brick burn chamber and use this as a bell?   https://www.facebook.com/marketplace/item/445840165820640/s

Hey Michael;

I couldn't get your link to open.  
I can tell you that if you want a Rocket Mass Heater.
In my opinion, it is better and easier to just build one.
Modifying conventional stoves has been done but it can be a less than optimal result.
Most RMH's are built for $200-300 .Some are built for less than $100 . Using the best Ceramic fiber board and blanket AND buying bricks for a bell you could spend $1000 maybe...

Oh and the RMH builders guide is less than $30 brand new at Amazon.