Tanked cryo cost on google shopping says about $672.00. (Brymill).
I work in a rural area.
We use bulk liquid nitrogen from a local farm supply store in the village. For a tank about 3 feet tall we pay about $40.00- we get it filled when it is about to run low - maybe every 4-6 mths. This tank is supplied by the farm store- about $40.00 or so we paid long back, sits just outside my personal office so that no body else touches (for safety purposes)and I just use disposable cups and q tips. Every doctor in our town uses the same supplier and same technique and get paid the same as those sophisticated tanks.
Try calling a local farm supply company and see if they will deliver to your office and compare. You may be surprised at the cost.