to build a bench, all you need is an unfinished door, a couple of old discard file cabinets to put it on, and a 2x4 to affix to the door to butt it against a wall (so it all stays still when you plane on it). Anyone with a power jointer would only need the door without butting it. A bench, though, would certainly be easier, I'll concede that, but if you don't have one...
But just to illustrate why I wouldn't pay $2650 for the LN bench, and my comments prior....hardwood is cheap around here if you shop around. I figured I'd go out to CL and see what my luck would be if I was in the hypothetical position of being ready to build a bench and I just wanted to take whatever I could find for lumber on CL and not go to any of the local sawyers around here who will custom cut lumber for you at half or 3/4ths of market if you have time to wait.
There are about half a dozen ads for lumber, but this one wins, I think. You could have enough 8/4+ thickness to build the bench and vise faces for about $200, maybe a little less. I didn't include the link to CL, because I don't want to get my post moved, but the picture with the sale is really nice wood, it's just short. I personally would go with plainer vise hardware, too, in practice, I have an economy vise and I've never really felt like I needed to have extremely expensive hardware. The vast majority of time I'd really like to cut out has a lot more to do with moving materials around (off of the bench) and planning things. Anyway, here's the text of the ad. A little scouting for hardware, and I could probably get the whole thing built for $400 in a couple of weeks (yes, I'd use a power planer as soon as the boards were jointed well enough for it to go in one, and I'd probably use a CMS to get quick square ends on the boards).
Large quantity (approximately 1,000 bd. ft.) of Kiln-Dried Maple lumber in 2" to 2.5" thickness. All boards are 3 ft. to 4 ft. in length. Widths are random from 5" up to 14" (the majority of boards are 8" & wider). Private stock. Will sell in lots of 100 board ft. for $150, 500 board ft. for $600, or 1,000 board ft. for $1,000. Call __________ & leave name & phone number. Will return your call ASAP.
As for the over the top comment about people being rude something or other for suggesting a bench build, I guess the club you're in if you do it is the club of having an extra 2 grand to spend on other tools or lumber. I still don't think there's anything wrong with someone else buying that bench, but I sure wouldn't do it. I just don't personally see the value, but instead I see something relatively plain that costs a lot for what it is. And my rear wouldn't pucker nearly so much the first time I drove a chisel into a shop made bench or accidentally had an overcut that marked it up.