I don't have a high opinion of a new Jennair, much less an older out of warranty model. That model is a discontinued older style. An "amazing price" for it would be maybe $300 for a used model. $500-$600 would be a good Craig's List price for it, with folks asking $700-$800 and accepting the lower price. It has no warranty, and it wouldn't be eligible to purchase an extended warranty. If you're OK with maybe getting a couple of years out of it, or the possibility of having a $300 repair bill a year down the road, I'd buy it. If you'd prefer a model with a warranty (from a crappy company to deal with on warranties) and that is eligible to purchase an extended warranty (highly recommended with any of the Whirltagaire products.) then save your money and get a new one. I'd buy something else. Just about anything else.

I went to a showroom that has a working Jenn Air gas downdraft cooktop. I had decided to get one, to replace our old electric (coils!) downdraft cooktop. But I did want to check it out first. We turned on the ventilation, and as soon as I turned on the burner, the downdraft sucked on the flame itself. This was a deal breaker for me. You should definitely give one a trial run to see if this matters to you.

If you click "Dimensions" off to the right on the page you linked, you'll get a PDF data sheet that lists the cutout dimensions: A. 13" (33.0 cm) upper cabinet depth B. 30" (76.2 cm) min. opening width C. For minimum clearance to the top of the cooktop, see NOTE. D. 23 " (59.1 cm) opening depth E. 30" (76.2 cm) min. opening width F. Junction box - 5.5" (14.0 cm) min. from either cabinet, 10" (25.4 cm) max. from floor. Outlet must be flush. Nothing located in shaded area can extend more than 2" (5.1 cm) from wall or range will not slide all the way back. G. Cabinet door or hinge should not extend into cutout. H. 18" (45.7 cm) I. 3" (7.6 cm) min. clearance from both sides of the range to the side wall or other combustible material. NOTE: 24" (61.0 cm) minimum when bottom of wood or metal cabinet is covered by not less than 1⁄4" (0.64 cm) flame retardant millboard covered with not less than No. 28 MSG sheet steel, 0.015" (0.4 mm) stainless steel, 0.024" (0.6 mm) aluminum or 0.020" (0.5 mm) copper. 30" (76.2 cm) minimum clearance between the top of the cooking platform and the bottom of an uncovered wood or metal cabinet.

I had ordered a Kenmore Elite model 42623 induction range, but it got damaged in shipment. Before ordering a replacement, I did some research on other induction ranges and really liked the KitchenAid KSIB900ESS, so I ordered it on sears.com for full retail price, which I never do! Sears gave me a 7/26/2016 delivery date, which seems kind of a long way out. So I did some more searching around the web for info on this model and found this forum. I had no idea about the "history" of this range getting into the market so eager buyers could actually purchase it! Despite the delay, I'm going to keep my order open. I'm a little concerned that Lowes and Home Depot list this range as "discontinued"? I hope that isn't true. I have a favorable opinion of KitchenAid, am eager to get induction, and like the specs for this range. But what really has me willing to wait is the sleek and gorgeous styling of this range! No obtrusive knobs, it has a minimalist glass top without the thick printed circles, great oven handle design, all stainless exterior, ... just an A+ to me.