John,
The stopper is an acc that you may not need, but want. The CMS-TS 75 kit comes with the same miter gauge the the router kit has that can be used as a rip fence, but it's not that long. The stopper is more like the traditional rip fence on US table saws. I suggest you get it.
There is also the issue of the VAT TAX. As a visitor you can get that back at the airport when you leave after jumping through some hoops. Ask who ever you purchase the item from to register you for the VAT TAX refund. Then show the paper work and items purchased at the airport for the refund. Good luck