sell it all and goto a gym instead.
the fact its at home doesnt help at all.
dont worry about the calories, your not losing much in terms of calories but it will be doing wonders for your heart and your body.
get yourself a heart monitor, work out your fat burning zone and then train in this area.
no man should have the setting on anything other than MAX on a rower imo (they arent really that restrictive).
set a goal in distance, then do 100m splits, 100m slow then 100m full on, 100m slow, 100m full on, great for you!
most of all tho, sell it all and goto a gym, at home you can say 'maybe after x programme' then its too late.
once you have left your house for the gym your in training mode, it gets done and you get home and relax :]
each time i wipe my face with my hand towel i motivate myself, i use one of my baby boys hooded towels, i know i need to be fit and healthy for him :]