It depends on where you keep it. If you use it in the room, then you need the ability to lock it so patients can't walk off with the roll of paper. But, if you keep it up front where we do, then you don't need to pay the extra money.
I haven't done the cost analysis, but I can guarantee you that you will be happier with the TSP800, and your staff will be MUCH happier with TSP800. I can't be sure, but from what you are saying, the scenario you describe would require an 8 1/2 by 11 sheet with four scripts using perforation. Logistically, this is much more difficult to use. Plus, the paper, which you buy separately, is sold specifically for certain state requirements.
I think in the long run you will be glad you purchased the Star. I may be way off base, but if you are still in the Bangor area, you are welcome to see it "live" at Adam's or my place.
I thought Adam would mention this in his post, but he didn't so I will have to boast a little:
Believe it or not, I am being featured in an article written by Star Micronics. I know it's not the NEJM, but it's a start, lol.
HTH
By the way, I am still against clinics at Wal-Mart, but that is just my opinion.