I had a similar experience whereby I basically walked in to buy a screen cleaning solution. Upon checkout, the agent flat out told me "You know, this is really pricey and you could get a cheaper one for more value at the target just off a block from here".

I must say, I was quite surprised and thrilled at the same time. Sure, I could get an inexpensive one.. But for that kind of thoughtful service, I actually just felt like buying it! I didn't though, still a college student..