you see those terms thrown around a lot as if they're interchangeable...they're not.
there's a good illustration of this over at sailor curt's.
price is easy enough; for most things including the ak-47's at the heart of curt's post, it's the wholesale replacement cost, which is a pretty fixed amount...for instance decent clone ak's at bangers are under $400 to ffl's...anything extra is blue sky, and like i said at curt's, ain't nothing wrong with that, but how much?
well then you're talking about value, and there's nothing fixed about that...what i normally did was charge a $50 markup to order any firearm on a prepaid basis, so about $450 plus nics and tax; dealers who price their inventory at normal retail might use a 50% markup for a price of $600...though they may not sell many...so to legal buyers in no hurry and with a dozen competing gun sellers in town the value would probably be $450-$500.
but throw in an "exigent circumstance", (cops aren't the only ones...heh...who face those) and well...if i was in new orleans in '05 or maybe in houston today, the stores were closed and i didn't have a gun? that value shoots right up there to about whatever i had to pay.
or if i was an illegal-immigrant dope-ganger i guess the value would be what the evil, criminal p.o.s. with a "not-prohibited status" charges me to buy it and resell it to me.
and if i was lieutenant spokesperson of the hometown sheriff's office? well, i'm going to grab onto the highest figure i hear anybody within a mile of the investigation mention...'cause that makes us look good and goes over real big when the sheriff is beggin' for tax money to fund the new ninja squad...them's $700 ak's by gosh, that pot plant's worth $5000 of pot, and the mangled gold chain with a true melt value of $200 looks a lot better on the recovered-property sheet at the $2000 jacked-up-500% retail tag price down at mayor's jewelry...
price is easy...value is a whole 'nother thing.