Vendors vendors vendors. Why do they vex me so?
So, when you’re discussing pricing with a potential customer, and you give him a price over the phone, then discover it’s wrong and add the new price to an e-mail filled with marketing material, well, you should call out that new price, lest the potential customer think that the number from the phone conversation is canonical.
And when a customer repeatedly mentions one specific need in multiple conversations, and you have two products with very similar names, and only one of those products offers the feature that fulfills that very specific need, well, make sure you sell the customer that product. Especially when that product costs more!
I hate vendors.