Fridge freezer repairs regassing

I have this 80l KELLERMANN STAINLESS STEEL FRIDGE/FREEZER in very good condition. It has setting from +10 degree celsius to minus -22 degrees celsius. Compressor recently tested by electrician of fridges and confirmed in 100% working order. As you can see from photos control panell also in working order. I have had this fridge/ freezer in storage for about 14 months after i sold my caravan and thus according to the electrician who inspected it, it only requires to be regassed as it is not getting cold. Compressor runs 100% but it does not get cold. Reason for selling - No longer do camping so it is just standing in storage room. It also have 4 castor wheels fitted of which two is lockable so that it wont move around when transported. It has two hinges on the sides to carry when required. As is wthout regassing i am selling it for R2200