I wouldn't be surprised if it impacts it a bit. While I wouldn't mind paying in Euros, my currency is USD. When I see prices in Euros, my first thought is "that's not actually that much, it's actually more expensive." Then I catch myself and go and covert the price to figure out how much it actually is.
I have an aversion to fees though, and while I wouldn't mind buying the SaaS, I then have to remember which of my credit cards charge foreign exchange fees and how much they are, and then add that to the price of the service I'm buying.
So I guess it depends on how logical your customers are, where they would stop in that thought process, or if they would care if your prices were 3.5% higher to them.
EDIT: Also, on pricing I think maybe you should consider getting rid of the 0.99 cents on there. There's a bunch of logic in pricing, but I think in general $X.99 is what people expect to see, whole numbers is premium (think upscale restaurants), $X.95 is a bit better than $X.99, and then if you have an odd amount like $X.82 they would think it's discounted.