ALL 4 NEW IN BOX $100 FIRM   bought both headlights and both side marker lights because ours were faded and pitted then car got totalled. still in boxes only removed for these pictures.  fits 98 - 02 mercury grand marque and I think maybe same years ford LTD   4 lights total Or TRADE for roto tiller, chainsaw or gun stuff/ammo...     thanks  also trade for nice 9mm or various ammo like- 380acp, 9mm, 38, 357, 40s&w, 45acp, 45 long, 30/30win  and of corse a 9mm gun is probably worth more than lights so I would throw in some cash there.

Nappa on sale they are 67.50 each at Auto Zone and O rielys same price as ech other at 61.99 each side here's link below also Auto Zone prices shown in pics just copy and paste to adress bar to view or view pics thanks

http://www.autozone.com/electrical-and-lighting/headlight-assembly/mercury/grand-marquis/1999/8-cylinders-w-4-6l-sfi?filterByKeyWord=headlight&fromString=search

then the turn signal lights are 37.99 for left and 34.99 for the right 61.99+37.99=99.98 plus 6.8% sales tax = 106.78 that's left side only which is why I had them priced that way and I was giving the other side free...???? your basically getting 213 bucks worth of lights for 100 bill 
turn signal link is 

http://www.autozone.com/electrical-and-lighting/turn-signal-light-assembly/mercury/grand-marquis/1999/8-cylinders-w-4-6l-sfi?filterByKeyWord=turn+signal&fromString=search