Anahootz I can't tell from your post whether you can or have played this guitar.
My opinion is, if you have played it and you like it a lot, 'it suits you', then it's probably an ok price.
If you're ordering on line, sight unseen, why not get a new D28 from Elderly? Below is their quote:
MARTIN D-28 GTR & HSC D-size solid rosewood & spruce body, white body binding, natural top, black pickguard, ebony bridge with small maple bridge plate, ebony fingerboard (standard 1 11/16" nut width and 25.4" scale length), dot inlays, low profile neck shape, chrome enclosed gears, gloss finish. Thermoplastic hardshell case. stock # D28Our Price: $1440.00