It's better to swallow your pride than to lose your profit. A friend is not a friend if he asks for a discount. A verbal contract isn't worth the paper it's written on. Never trust a hardworking employee. Latinum can't buy happiness, but you can sure have a blast renting it.
Ambition knows no family.
For every Rule, there is an equal and opposite Rule. If they take your first offer, you either asked to little or offered too much. A warranty is valid only if they can find you. Everything is worth something to somebody. Don't trust anyone who trusts you.