Nice..thanks!
How much better is a $4000 bike than a $2000 bike?
The LeBS I bought my < $2000 bike from also sells Pedigo. (That have them in a separate room as Pedigo required. (I'm surprised Pedigo didn't require a waiver to enter the room.) I looked at them. Didn't see anything that justified the significant price difference.
They had 2 of those eBikes made to look like 20's Board Track Racing motorcycles on the floor. List price $6000. They were offering them at $3,000. Riding position was ...silly...in my opinion.
Anyway, When you buy a $40,000 car instead of a $20,000 car you get identifiable benefits. You and I might disagree about the value of those but there they are . When you buy a $4000 eBike instead of a $2000 eBike....what more do you really get?
You pose a very good question, but on a generalized basis a very tough one to answer.
My observation as a dealer, is that since we are in the still very early stages of a relatively new market, you have eBike OEM's trying to figure out what combination of features and price points are going to sell well, and even further what supply distribution business model will work to be the most profitable.
If you get a particular model of Brand X priced around $4000, and compare it to Brand Y, where both ebikes have the same motor wattage, battery capacity, and same position of motor (i.e. rear or mid mount), I think the differences you will find are GENERALLY speaking (i.e. not always) in the following areas:
+ Brand X at $4000 will likely have better battery mount integration (meaning more concealed or more tightly integrated on the bike), than Brand Y at $2000.
+ Brand X should have a higher end derailleur (if it has a derailler and cog set and not a NuVinci style hub) than Brand Y
+ Brand X will most likely have higher end hydraulic disc brakes than Brand Y
+ Brand X MIGHT have a more sophisticated, and better integrated display, offering more display functionality than Brand Y
+ Brand X MIGHT have better quality tires, and rims than Brand Y
+ Brand X MIGHT have better quality seat though it may not even be a more 'comfortable or plush' seat than Brand Y
+ Both could very well have top end speed of 28 mph, depending on their brand
+ Both could very well have similar motor output in terms of watts, though it is possible than Brand Y could have better quality motor internals, or higher torque rating
+ You would be very unlikely to find a mid mount motor on an ebike at the Brand X price, though that doesn't include highyl discounted brands that are close outs, or that a dealer simply can't move for whatever reason at the MSRP.
+ Wiring connections, wiring placement/integration, and controller quality SHOULD be better on Brand X, but the price at $4000 does not guarantee that.
+ Frames likely are relatively strong, but the $4000 ebike usually can be built to be much lighter with the same strength, with better welds and appropriately designed geometry and frame material.
+ Shocks or suspension in general should be higher end, and a noticeable difference in how they perform, and can be user adjusted on Brand X.
+ Brand X and Brand Y will very likely both be very suitable to ride in most on road conditions, and either could be sold at that price for off road conditions, though its likely the difference is more noticeable between brand X and Brand Y at those price points for the off-road designed model than may be noticeable for strictly road riding models.
+ I would hope the motor smoothness, and overall drive train operation is better and perhaps even less noisy on Brand X vs Brand Y. (again not a guarantee)
+ Brand X may (but not always) have more accessories included and better quality ones than Brand Y, such as fenders, rear racks, mirrors, better coverage chain guards, lights front and rear, and possibly better integrated.
+ Brand X may have a longer warranty, and I'm thinking of a large number of brand Y's that typically have only a 1 or 2 year, and just a handful of Brand X's, that have 3 year or even 4 Year warranties.
+ I would hope that Brand X has better quality battery cells, longer battery cycle life, and a better quality BMS, and charger. Sometimes the higher end brands do not disclose the quality of their cells, let alone the Brand. This is the most challenging of all ebike attributes to qualify or compare. Ask lots of questions until you are satisfied. The battery is the single most important component on an ebike.
+ Motors on the otherhand, are very mature, built in the millions for many applications, and fairly readily replaced. Mid drives not as many built as hub drives, but generally in the past 5 years, they have greatly improved their reliability.
Lastly, there are a handful of brands who spend a lot on marketing, and tend to sell their ebikes at more premium prices. The marketing can cost a lot, but generally I don't think that cost is necessarily a big contributor to their price. I think their margins would tend to be better for the OEM, which could allow them to do more (i.e. invest in offering more models, expand faster, provide better support, etc.). As proven in many different industries, over and over, there are buyers who are willing to pay more for a better marketed brand, or one that is positioning themselves as being 'premium', when their product may not be all that 'premium' in terms of actual content. A lot of it is very subjective. Especially in food or beverage. (i.e. is a $5 coffee cup of Sbux 'better' than a $1 Cup of McD's .)
Anyway, that was not the intent of the post to trigger this sort of discussion on a $2000 or $4000 ebike. I've been following this industry since the late 90's, just having a very keen interest in power propulsion technology (batteries, fuel cells, microturbines), and my love of the overall simplicity and beauty of bicycles. A few years ago (2014), I could really see the inflection for ebikes here in the US, and felt it was finally time to put some of my money into it, and more of my life's work into something tangible that I just really really enjoy.
The e-bike 'smile' is a very nice confirmation of my continued enthusiasm, after every test ride I see people take for the first time, and certainly after they actually buy. The surprise of the ride for first timers, is often even better. It's like seeing the kid who first figures out how to ride a bike. The sense of wonderment, and joy, and maybe even some pride in 'accomplishment.'
Pretty cool too, that we have a forum like this to share the fun and experiences ! (I'm very thankful - when I was a kid back in the 70's never would have imagined this.)