If you are selling---

Always state how many rounds you've fired. Pistols are a max. of 50, rifles max. of 200.

Your gun is always LNIB or at least %90.

Anything not LNIB or not %90 is a rare collectible.

Production of whatever you are selling has ceased thus the value has increased.

These are banned by the government.

All 1911s were used  by your grandfather or uncle in WWII.

All your guns are a rare variant of the thousands of others they made just like it.

AR-15s made from parts kits are vastly superior to any of the factory offerings.

If it has a Bushmaster lower, it is a complete Bushmaster rifle.

The Bluebook is just a general guide and you really can't base a price on anything it says.

All Winchester mod 94s are pre-'64.

All riot shotguns were used by some police dept.

All bolt action rifles have killed more deer than I can count.

All rifles shoot groups at 100 yds. you cover with a quarter.

Sorry, all Glocks come with no magazines now.

If you are buying---

You can this gun at Wal-mart for half of what you are asking.

You do realize they made like 20 million of these?

I really don't want this gun, but I might pick it up for a good price.

I just saw two of these in better shape at another table for $50 less than you are asking.

Aren't these illegal?

I bought this exact gun in 1965 for $65! It can't possibly be worth $300!

This is all the money I've got in the world, so can you take my offer?

The Bluebook is just a general guide and you really can't base a price on anything it says.

The market totally hit bottom on these yesterday.

I know I have missed some key items and I am sure people will add some, but this should be a good general guideline.