Do you feel pressure to buy when the sales person is nice?

I like to consider myself an educated consumer. Before I even go into Sephora, ULTA or MAC I already know what product I'm going to buy and how much it costs. Hell, at that point I've already compared to so many other products. One of the reasons that I do all of this research is because I like to be self sufficient, but also I know what I want and what my budget is and I feel guilty saying no I am not going to buy that when a sales person has been helpful. That was the case on Friday, I went to Sephora looking for specific nail polishes and this nice sales person representing Hourglass cosmetics offered to give me a makeover. Usually I would turn this down but I accepted the offer this time. I've seen the brand but I had never tried it. She was very nice and helpful and gave me some good tips. I wasn't even looking for a new primer or foundation (especially since I had just purchased a new tinted moisturizer). I have to admit that the products she used felt great and light but then the moment of truth happened (as it always does) and I had to check the price. You can imagine my shock at seeing that the make up primer was $55, the foundation was $50 and the taklon brush was $ 52; especially since I was only on planning to purchase a new nail polish. Of course I had the guilt of having to say no after she did a full face of make up. I could not justify spending so much money when I already had similar products at home. Previously I would have probably bought at least one item, but I'm happy to report that I said no and picked up my nail polishes. I will definitely purchase these items in the future, but only when I'm ready. Do you feel pressure to buy or can you say no?