Current Market
I regularly watch Palmer sales and have added a number of Palmers to my collection in recent years.
Presently, the market is depressed (no secret) and there have been many Palmers coming up for sale by original owners. Recent activity within the last year, has shown Model J's selling for ~$1,300, K's for $1,200, Model 11's for $850, and Model 20's for $2,500-$3,000, Bar cue conversions can still be had for $250-$350. These are all open market verifiable values, not backroom deals involving an unknowledegable seller.
If you take Tate's value on this cue which is roughly $1,000. and discount it for today's market, you are under a grand.
If you are buying this to flip, either have a ready buyer specifically looking for a Model 14 or don't go overboard on your offer to the seller.